Merge "libutils: check vsnprintf error" into oc-dev am: a03d37d5 am:...

Merge "libutils: check vsnprintf error" into oc-dev am: a03d37d5 am: d8801aaa am: d05ecb8d am: dc99a094 am: 64b312bb am: 0cb14f1f am: ce44c8ac

Original change: https://googleplex-android-review.googlesource.com/c/platform/system/core/+/12254459

Change-Id: I51d7fd41157708b398888aac7f70dd09c397ee81