[automerger skipped] libprocessgroup: fix reset of file_v2_name am: 72254810 -s ours

am skip reason: Merged-In I5b33ca47b4fa5cabf582c8804bd13f72f6e58411 with SHA-1 35078468 is already in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/system/core/+/24271775



Change-Id: Ia23a70becc20a4605a01442d08bc062fda018383
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>