h264dec: check for overflows when calculating allocation size. am: a3dd713 am: d504c68 am: 9f3762d am: 76f606b am: 9d9ebc9
am: 8e46016

* commit '8e4601608f3ecbc7b5b40c6b6efe3290104aa743':
  h264dec: check for overflows when calculating allocation size.

Change-Id: Icac8c5785b5c15c1e882a5ced0f536c3501e1159