Merge "Address corner case in which empty audio is requested and MusicRecognitionManagerService crashes." into sc-dev am: 2b14f17e99 am: 6c491f07f6

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

Change-Id: I75b2dd7d3977b6a06cbd29da09a127b04baa93b9