Merge change 5240 into donut

* changes:
  Fixing the synth function so that queue processing continues.

packages/TtsService/src/android/tts/TtsService.java

@@ -402,6 +402,7 @@ public class TtsService extends Service implements OnCompletionListener {
                     if (synthAvailable) {
                         synthesizerLock.unlock();
                     }
+                    processSpeechQueue();
                 }
             }
         }