[automerger skipped] Disable -Wunused-value for surfaceflinger am: b7a1a99 -s ours

am skip reason: Merged-In Idd45525cc3fe15c3b5e66332650ce8b7811ae026 with SHA-1 91b33f1 is already in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/native/+/30510371

Change-Id: I218851bb020bf184189fa638005cfc635615087b
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>

Author: appujee