AudioSource: initialize variables am: a2f5b80 am: 67e0eb7 am: 9c67287 am: 211ec4d am: 1bc35dd am: 8cb55c6 am: bbe7dfd  -s ours
am: b81c6b1

* commit 'b81c6b11a5ff278857c3cd496b887985bf564be0':
  AudioSource: initialize variables

Change-Id: Ib31ff9008b799c847a08442e810e103b14f268b5