Add a missing null-pointer check in HeadsetService.stop()

Bug: 27678483

Change-Id: I288b905d6b3f827a94365d512305cd29e186f3d4

diff --git a/src/com/android/bluetooth/hfp/HeadsetService.java b/src/com/android/bluetooth/hfp/HeadsetService.java
index cda51fc..10bf23a 100755 (executable)
--- a/src/com/android/bluetooth/hfp/HeadsetService.java
+++ b/src/com/android/bluetooth/hfp/HeadsetService.java
@@ -78,7 +78,9 @@ public class HeadsetService extends ProfileService {
         } catch (Exception e) {
             Log.w(TAG,"Unable to unregister headset receiver",e);
         }
-        mStateMachine.doQuit();
+        if (mStateMachine != null) {
+            mStateMachine.doQuit();
+        }
         return true;
     }