[automerger skipped] Merge "AudioFlinger: Protect initialization code in threadLoop with mutex" into main am: b6d489f447 am: 09de537754 -s ours

am skip reason: Merged-In Ia87be0b9240f3da3c06f38cae9b6039cf0a7246e with SHA-1 3f2cee61af is already in history

Original change: https://android-review.googlesource.com/c/platform/frameworks/av/+/3308070

Change-Id: If79b17973db231506b7c155bcb0a2175adea5f79
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>