Merge change 7435

* changes:
  Ensure that everything gets backed up at least once
diff --git a/libs/audioflinger/AudioFlinger.cpp b/libs/audioflinger/AudioFlinger.cpp
index 598a356..ffc0278 100644
--- a/libs/audioflinger/AudioFlinger.cpp
+++ b/libs/audioflinger/AudioFlinger.cpp
@@ -212,6 +212,7 @@
     } else {
         mA2dpMixerThread->getTracks_l(tracks, activeTracks);
         mHardwareMixerThread->putTracks_l(tracks, activeTracks);
+        mA2dpMixerThread->mOutput->standby();
     }
     mA2dpEnabled = enable;
     mNotifyA2dpChange = true;