Merge "Address corner case in which empty audio is requested and MusicRecognitionManagerService crashes." into sc-dev am: 2b14f17e am: d6cbda78 am: 2683219b

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/15208796

Change-Id: Id7e690fff57883d73d2010dedd684f1ffe79dba7