[automerger skipped] RESTRICT AUTOMERGE SurfaceFlinger: fix a potential race condition in stealReceiveChannel am: 97a317064a -s ours am: 8a4f12a263 -s ours

am skip reason: subject contains skip directive

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/native/+/18764133

Change-Id: Ic6d93a8a9bdb80d8bc9088fb84a076b8303071e3
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>