h264dec: check for overflows when calculating allocation size. am: a3dd713 am: d504c68 am: 9f3762d am: 76f606b am: 9d9ebc9 am: 8e46016 am: 3e1803f
am: 13d3588

* commit '13d35885fed6e00ec7ac3493dd3fb7bdb98a8cf8':
  h264dec: check for overflows when calculating allocation size.

Change-Id: Iecbc7be1f71a863ed1c7e5b3d5647946828614fa