am c6aaa09b: am 756e75cf: am 090c60bb: Merge change I73b60354 into eclair

Merge commit 'c6aaa09b7075f00e2cff543b50bc84bbdd133d7b'

* commit 'c6aaa09b7075f00e2cff543b50bc84bbdd133d7b':
  AudioFlinger: delete Track object when createTrack() fails due to lack of tracks in AudioMixer.