Merge "AudioSource: initialize variables" into mnc-dev am: d31f7db am: 96beb1b
am: 503a93a

* commit '503a93a6f4c3913a5fb103b86849fa09e0a0a223':
  AudioSource: initialize variables

Change-Id: I178dd68683eb8c1a08c5238ec98a7f9d6cb464e1