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

* commit 'bbe7dfd0be12eaf89bde28253ccaed5b0b4c262e':
  AudioSource: initialize variables

Change-Id: I7a30ccba910e69b39012db1e39129ca38937a0d1