[automerger skipped] RESTRICT AUTOMERGE SurfaceFlinger: fix a potential race...

[automerger skipped] RESTRICT AUTOMERGE SurfaceFlinger: fix a potential race condition in stealReceiveChannel am: a820057a am: 68ac61d4 -s ours am: 61bcc6ec -s ours

am skip reason: subject contains skip directive

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/native/+/18766123



Change-Id: Ia0ed099e9d124a07be0476d113a98810659a91d0
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>