Fixing uninitialized variable in file_audio_device.cc.

R=henrika@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/17049004

git-svn-id: http://webrtc.googlecode.com/svn/trunk/webrtc@6872 4adac7df-926f-26a2-2b94-8c16560cd09d
diff --git a/modules/audio_device/dummy/file_audio_device.cc b/modules/audio_device/dummy/file_audio_device.cc
index e7771c6..182c43d 100644
--- a/modules/audio_device/dummy/file_audio_device.cc
+++ b/modules/audio_device/dummy/file_audio_device.cc
@@ -194,6 +194,7 @@
 
   _playing = true;
   _playoutFramesLeft = 0;
+  _playoutFramesIn10MS = kPlayoutFixedSampleRate/100;
 
   if (!_playoutBuffer)
       _playoutBuffer = new int8_t[2 *