am 4ebbabda: am 192cbbad: Fix audio track pause.

* commit '4ebbabda6584aeb5ad2714e7db1702d00e84dad4':
  Fix audio track pause.
diff --git a/media/libmedia/AudioTrack.cpp b/media/libmedia/AudioTrack.cpp
index 7df9b75..e5a60f5 100644
--- a/media/libmedia/AudioTrack.cpp
+++ b/media/libmedia/AudioTrack.cpp
@@ -491,6 +491,7 @@
     AutoMutex lock(mLock);
     if (mActive) {
         mActive = false;
+        mCblk->cv.signal();
         mAudioTrack->pause();
     }
 }