Found while fuzzing m-c 20230215-883fd80a1c94 (--enable-address-sanitizer --enable-fuzzing)

To reproduce via Grizzly Replay:

$ pip install fuzzfetch grizzly-framework
$ python -m fuzzfetch -a --fuzzing -n firefox
$ python -m grizzly.replay ./firefox/firefox testcase.html

==325347==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000028 (pc 0x7f8a18c436cc bp 0x7ffe4d1100f0 sp 0x7ffe4d10f880 T0)
==325347==The signal is caused by a READ memory access.
==325347==Hint: address points to the zero page.
    #0 0x7f8a18c436cc in nsLayoutUtils::FindNearestCommonAncestorFrame(nsIFrame const*, nsIFrame const*) /builds/worker/checkouts/gecko/layout/generic/nsIFrame.h
    #1 0x7f8a18c450e1 in nsLayoutUtils::TransformRect(nsIFrame const*, nsIFrame const*, nsRect&) /builds/worker/checkouts/gecko/layout/base/nsLayoutUtils.cpp:2421:7
    #2 0x7f8a1c867d21 in mozilla::a11y::HTMLAreaAccessible::ParentRelativeBounds() /builds/worker/checkouts/gecko/accessible/html/HTMLImageMapAccessible.cpp:207:3
    #3 0x7f8a1c8160c6 in mozilla::a11y::LocalAccessible::BundleFieldsForCache(unsigned long, mozilla::a11y::CacheUpdateType) /builds/worker/checkouts/gecko/accessible/generic/LocalAccessible.cpp:3335:28
    #4 0x7f8a1c813d7d in mozilla::a11y::DocAccessible::ProcessQueuedCacheUpdates() /builds/worker/checkouts/gecko/accessible/generic/DocAccessible.cpp:1529:16
    #5 0x7f8a1c7846fa in mozilla::a11y::NotificationController::WillRefresh(mozilla::TimeStamp) /builds/worker/checkouts/gecko/accessible/base/NotificationController.cpp:890:16
    #6 0x7f8a18acaf5e in nsRefreshDriver::Tick(mozilla::layers::BaseTransactionId<mozilla::VsyncIdType>, mozilla::TimeStamp, nsRefreshDriver::IsExtraTick) /builds/worker/checkouts/gecko/layout/base/nsRefreshDriver.cpp:2567:12
    #7 0x7f8a18ad9ae6 in TickDriver /builds/worker/checkouts/gecko/layout/base/nsRefreshDriver.cpp:373:13
    #8 0x7f8a18ad9ae6 in mozilla::RefreshDriverTimer::TickRefreshDrivers(mozilla::layers::BaseTransactionId<mozilla::VsyncIdType>, mozilla::TimeStamp, nsTArray<RefPtr<nsRefreshDriver>>&) /builds/worker/checkouts/gecko/layout/base/nsRefreshDriver.cpp:351:7
    #9 0x7f8a18ad984e in mozilla::RefreshDriverTimer::Tick(mozilla::layers::BaseTransactionId<mozilla::VsyncIdType>, mozilla::TimeStamp) /builds/worker/checkouts/gecko/layout/base/nsRefreshDriver.cpp:367:5
    #10 0x7f8a18ad95d5 in mozilla::VsyncRefreshDriverTimer::RunRefreshDrivers(mozilla::layers::BaseTransactionId<mozilla::VsyncIdType>, mozilla::TimeStamp) /builds/worker/checkouts/gecko/layout/base/nsRefreshDriver.cpp:911:5
    #11 0x7f8a18ad886f in mozilla::VsyncRefreshDriverTimer::TickRefreshDriver(mozilla::layers::BaseTransactionId<mozilla::VsyncIdType>, mozilla::TimeStamp) /builds/worker/checkouts/gecko/layout/base/nsRefreshDriver.cpp:825:5
    #12 0x7f8a18ad7aa2 in mozilla::VsyncRefreshDriverTimer::NotifyVsyncOnMainThread(mozilla::VsyncEvent const&) /builds/worker/checkouts/gecko/layout/base/nsRefreshDriver.cpp:746:5
    #13 0x7f8a18ad729b in mozilla::VsyncRefreshDriverTimer::RefreshDriverVsyncObserver::NotifyVsyncTimerOnMainThread() /builds/worker/checkouts/gecko/layout/base/nsRefreshDriver.cpp:592:14
    #14 0x7f8a18ad6e38 in mozilla::VsyncRefreshDriverTimer::RefreshDriverVsyncObserver::NotifyVsync(mozilla::VsyncEvent const&) /builds/worker/checkouts/gecko/layout/base/nsRefreshDriver.cpp:549:9
    #15 0x7f8a1752bb8c in mozilla::dom::VsyncMainChild::RecvNotify(mozilla::VsyncEvent const&, float const&) /builds/worker/checkouts/gecko/dom/ipc/VsyncMainChild.cpp:66:15
    #16 0x7f8a17a43c33 in mozilla::dom::PVsyncChild::OnMessageReceived(IPC::Message const&) /builds/worker/workspace/obj-build/ipc/ipdl/PVsyncChild.cpp:228:78
    #17 0x7f8a1781b54c in mozilla::dom::PContentChild::OnMessageReceived(IPC::Message const&) /builds/worker/workspace/obj-build/ipc/ipdl/PContentChild.cpp:8784:32
    #18 0x7f8a10e6c189 in mozilla::ipc::MessageChannel::DispatchAsyncMessage(mozilla::ipc::ActorLifecycleProxy*, IPC::Message const&) /builds/worker/checkouts/gecko/ipc/glue/MessageChannel.cpp:1800:25
    #19 0x7f8a10e6919d in mozilla::ipc::MessageChannel::DispatchMessage(mozilla::ipc::ActorLifecycleProxy*, mozilla::UniquePtr<IPC::Message, mozilla::DefaultDelete<IPC::Message>>) /builds/worker/checkouts/gecko/ipc/glue/MessageChannel.cpp:1725:9
    #20 0x7f8a10e69d6e in mozilla::ipc::MessageChannel::RunMessage(mozilla::ipc::ActorLifecycleProxy*, mozilla::ipc::MessageChannel::MessageTask&) /builds/worker/checkouts/gecko/ipc/glue/MessageChannel.cpp:1525:3
    #21 0x7f8a10e6af9e in mozilla::ipc::MessageChannel::MessageTask::Run() /builds/worker/checkouts/gecko/ipc/glue/MessageChannel.cpp:1623:14
    #22 0x7f8a0f624809 in mozilla::RunnableTask::Run() /builds/worker/checkouts/gecko/xpcom/threads/TaskController.cpp:541:16
    #23 0x7f8a0f61ab9c in mozilla::TaskController::DoExecuteNextTaskOnlyMainThreadInternal(mozilla::detail::BaseAutoLock<mozilla::Mutex&> const&) /builds/worker/checkouts/gecko/xpcom/threads/TaskController.cpp:855:26
    #24 0x7f8a0f617e18 in mozilla::TaskController::ExecuteNextTaskOnlyMainThreadInternal(mozilla::detail::BaseAutoLock<mozilla::Mutex&> const&) /builds/worker/checkouts/gecko/xpcom/threads/TaskController.cpp:686:15
    #25 0x7f8a0f618540 in mozilla::TaskController::ProcessPendingMTTask(bool) /builds/worker/checkouts/gecko/xpcom/threads/TaskController.cpp:464:36
    #26 0x7f8a0f62ace1 in operator() /builds/worker/checkouts/gecko/xpcom/threads/TaskController.cpp:188:37
    #27 0x7f8a0f62ace1 in mozilla::detail::RunnableFunction<mozilla::TaskController::InitializeInternal()::$_2>::Run() /builds/worker/workspace/obj-build/dist/include/nsThreadUtils.h:546:5
    #28 0x7f8a0f64f52e in nsThread::ProcessNextEvent(bool, bool*) /builds/worker/checkouts/gecko/xpcom/threads/nsThread.cpp:1225:16
    #29 0x7f8a0f659aa4 in NS_ProcessNextEvent(nsIThread*, bool) /builds/worker/checkouts/gecko/xpcom/threads/nsThreadUtils.cpp:477:10
    #30 0x7f8a10e73d8e in mozilla::ipc::MessagePump::Run(base::MessagePump::Delegate*) /builds/worker/checkouts/gecko/ipc/glue/MessagePump.cpp:85:21
    #31 0x7f8a10cf2cd7 in RunInternal /builds/worker/checkouts/gecko/ipc/chromium/src/base/message_loop.cc:381:10
    #32 0x7f8a10cf2cd7 in RunHandler /builds/worker/checkouts/gecko/ipc/chromium/src/base/message_loop.cc:374:3
    #33 0x7f8a10cf2cd7 in MessageLoop::Run() /builds/worker/checkouts/gecko/ipc/chromium/src/base/message_loop.cc:356:3
    #34 0x7f8a1849f709 in nsBaseAppShell::Run() /builds/worker/checkouts/gecko/widget/nsBaseAppShell.cpp:148:27
    #35 0x7f8a1d4e73a8 in XRE_RunAppShell() /builds/worker/checkouts/gecko/toolkit/xre/nsEmbedFunctions.cpp:742:20
    #36 0x7f8a10cf2cd7 in RunInternal /builds/worker/checkouts/gecko/ipc/chromium/src/base/message_loop.cc:381:10
    #37 0x7f8a10cf2cd7 in RunHandler /builds/worker/checkouts/gecko/ipc/chromium/src/base/message_loop.cc:374:3
    #38 0x7f8a10cf2cd7 in MessageLoop::Run() /builds/worker/checkouts/gecko/ipc/chromium/src/base/message_loop.cc:356:3
    #39 0x7f8a1d4e6b3f in XRE_InitChildProcess(int, char**, XREChildData const*) /builds/worker/checkouts/gecko/toolkit/xre/nsEmbedFunctions.cpp:675:34
    #40 0x559e4e970824 in content_process_main(mozilla::Bootstrap*, int, char**) /builds/worker/checkouts/gecko/browser/app/../../ipc/contentproc/plugin-container.cpp:57:28
    #41 0x559e4e970ce7 in main /builds/worker/checkouts/gecko/browser/app/nsBrowserApp.cpp:353:18
    #42 0x7f8a32368d8f in __libc_start_call_main csu/../sysdeps/nptl/libc_start_call_main.h:58:16
    #43 0x7f8a32368e3f in __libc_start_main csu/../csu/libc-start.c:392:3
    #44 0x559e4e8af2a8 in _start (/home/user/workspace/browsers/m-c-20230224092408-fuzzing-asan-opt/firefox+0x1122a8) (BuildId: bbf25bf221c1398aaadf0521432e1d23ff30f9fe)

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