h264dec: check for overflows when calculating allocation size. am: a3dd713 am: d504c68
am: 9f3762d

* commit '9f3762d8c76b778c8f600486a464838731105b09':
  h264dec: check for overflows when calculating allocation size.

Change-Id: Iefdde609316ffa6fb9037f24d3865980633cd4b9