Keep a copy of most recent audio played

Change-Id: I6b2f97881c39998a2fae9ab79d669af6c0a37e94
diff --git a/services/audioflinger/FastMixerState.cpp b/services/audioflinger/FastMixerState.cpp
index 139a1c8..6305a83 100644
--- a/services/audioflinger/FastMixerState.cpp
+++ b/services/audioflinger/FastMixerState.cpp
@@ -30,7 +30,8 @@
 
 FastMixerState::FastMixerState() :
     mFastTracksGen(0), mTrackMask(0), mOutputSink(NULL), mOutputSinkGen(0),
-    mFrameCount(0), mCommand(INITIAL), mColdFutexAddr(NULL), mColdGen(0), mDumpState(NULL)
+    mFrameCount(0), mCommand(INITIAL), mColdFutexAddr(NULL), mColdGen(0),
+    mDumpState(NULL), mTeeSink(NULL)
 {
 }