DO NOT MERGE ANYWHERE Add missing null pointer check inside HeadSetClientService.stop()
am: 3fe282a78e  -s ours

* commit '3fe282a78e8643329c5d6bc84ad5788cd4366b70':
  DO NOT MERGE ANYWHERE Add missing null pointer check inside HeadSetClientService.stop()

Change-Id: I376d9ee987ce3c1d859fbc78095cc85ea78475fa