Merge "Avoid clobbering `errno` from `realpath` call in `__mount`" into main...

Merge "Avoid clobbering `errno` from `realpath` call in `__mount`" into main am: a7fb895d am: 58d93c6d

Original change: https://android-review.googlesource.com/c/platform/system/core/+/3462806



Change-Id: I0e99b5650478fd611f5e7ca3b37928494f378569
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>