Merge "remount: Remove errno interaction from fs_mgr_overlayfs_teardown." am: eec8932c

Original change: https://android-review.googlesource.com/c/platform/system/core/+/2176922



Change-Id: I859fe1948a3a04c90d599efb3f6c28e2132fde44
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>