Merge "Nullability check for assert module" am: 5bfbc5330f

Original change: https://android-review.googlesource.com/c/platform/bionic/+/2478455

Change-Id: I580c132ea644ad14fac589daa8c046c6636a41de
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>