[automerger skipped] aaudio: fix crash from callbacks during close am:...

[automerger skipped] aaudio: fix crash from callbacks during close am: 4719048c am: 52bc293a -s ours

am skip reason: Change-Id If8f6f6f17ffe06eae98eb8b3930bca08c49a15f8 with SHA-1 320910fc is in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/av/+/12540591

Change-Id: I6befc8a3d676f22a4285e4b82a0705d2a2138189