FM: Unmute music stream when FM app lost audio focus

- Music stream should be unmuted when audio focus is lost
  because other applications might use music stream for
  playback as well.

Change-Id: Ia1a1d6b1080119c1e35c9de8a98b5206df3b56d6
diff --git a/fmapp/src/com/codeaurora/fmradio/FMRadioService.java b/fmapp/src/com/codeaurora/fmradio/FMRadioService.java
index 0bf8f1e..909a5a4 100644
--- a/fmapp/src/com/codeaurora/fmradio/FMRadioService.java
+++ b/fmapp/src/com/codeaurora/fmradio/FMRadioService.java
@@ -1260,8 +1260,11 @@
                          mSpeakerDisableHandler.removeCallbacks(mSpeakerDisableTask);
                          mSpeakerDisableHandler.postDelayed(mSpeakerDisableTask, 0);
                       }
-                      if (true == mPlaybackInProgress)
+                      if (true == mPlaybackInProgress) {
+                          if (mMuted)
+                              unMute();
                           stopFM();
+                      }
                       if (mSpeakerPhoneOn) {
                           mSpeakerPhoneOn = false;
                           if (isAnalogModeSupported())