h264dec: check for overflows when calculating allocation size. am: a3dd713 am: d504c68 am: 9f3762d am: 76f606b
am: 9d9ebc9

* commit '9d9ebc990f4b4b18f48d09232b053b3cb69dbb6b':
  h264dec: check for overflows when calculating allocation size.

Change-Id: I175db41766562a7638365091ce087628b31fed56