IGraphicBufferConsumer: fix ATTACH_BUFFER info leak am: dded8fdbb7 am: 7ee203b59d am: dc252255af am: 202aaa8f97 am: ec87aa5218 am: c5cb7c489b am: e8cceaf02f
am: aef60500d2

* commit 'aef60500d2a505c3dbbea74f62053c0bb072d5a7':
  IGraphicBufferConsumer: fix ATTACH_BUFFER info leak