Add missing null pointer check inside HeadSetClientService.stop()

Bug: 28664857

Change-Id: I62abc4eb4127db2d4f0cde44eca618996f099b49
Signed-off-by: Lianchao Song <songlianchao@huawei.com>
1 file changed
tree: 3e1abff30b2a7d9809afaad10a0cd45514527e72
  1. android/