Merge "libsnapshot: Reinitiaze SnapshotMergeStats instance" into main am: 45a6009f07

Original change: https://android-review.googlesource.com/c/platform/system/core/+/3543285

Change-Id: I7e60dd855e011a3df204a7ddf0fd9a14dcf0e2db
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>