Merge "audio policy: protect against null input device selection" into udc-dev...

Merge "audio policy: protect against null input device selection" into udc-dev am: a8ba2a1f am: 3d2a5eaa

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/av/+/22191042



Change-Id: Iade9df1c34e2ce2c24653b5e309fc2820d9b5d90
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>