[automerger] Fix OOB access in mpeg4/h263 decoder am: ef4ce15700 am: 9832a2a3f4 am: 144ba69187 am: 6fa588c7b6 am: 88c0c4897c am: efd8f9e09a
am: e545f3c8d3

Change-Id: Ic82cb29ade87f3bdee2504792206c7ae2f03456c