Clear mark-bitmap after compaction am: 8d521a25f3

Original change: https://android-review.googlesource.com/c/platform/art/+/2367136

Change-Id: Ia727f7dddde61c7148737241c067eeea55a86cc1
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>