DO NOT MERGE - f2fs-tools: do sanity check on xattr entry am: c208057ce9

Original change: https://googleplex-android-review.googlesource.com/c/platform/external/f2fs-tools/+/25151013

Change-Id: I609f5f2612e935275764e747c0fdfa9f29e63d10
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>