Back when mozjemalloc was considered third-party, and before bug 1365194, mozjemalloc was calling abort() and that was redirectory to MOZ_CRASH through a moz_abort() function. Bug 1365194 changed that so that moz_abort is called directly instead of abort, but the indirection is actually not necessary anymore. So we just kill moz_abort, which is unused anywhere else, and use MOZ_CRASH directly. Note this will (obviously) change crash signatures involving moz_abort. Review commit: https://reviewboard.mozilla.org/r/174144/diff/#index_header See other reviews: https://reviewboard.mozilla.org/r/174144/