Merge "Add a compile-time warning for malloc_usable_size() with _FORTIFY_SOURCE=3." into main am: da5c77dc03

Original change: https://android-review.googlesource.com/c/platform/bionic/+/3539499

Change-Id: I9b5c89c8cf4fa2dbae4e139bd227f91549c72520
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>