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: 01333c2b

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



Change-Id: I9247bbfeadb31a5547309cfd3463058a6c16756d
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>