[automerger skipped] av: change return value if effect is not processing am: ba4defea -s ours

am skip reason: Merged-In Ie987e6384b87e720b3fd569e242f6b8c3ae11e31 with SHA-1 bd9b0d36 is already in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/av/+/24840663



Change-Id: I3ea665d7acafab58e740830c18e8aca53f8a6483
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>