[automerger] Fix OOB access in mpeg4/h263 decoder am: ef4ce15700 am: 9832a2a3f4 am: 144ba69187 am: 6fa588c7b6 am: 88c0c4897c am: efd8f9e09a am: e545f3c8d3 am: 6cf42dbae7
am: 874ec86ebc

Change-Id: I1929d2d767bf662cfcef612b54ed10aa4c0fb460