Merge \\\\\\"DO NOT MERGE omx: check buffer port before using\\\\\\" into klp-dev am: 5713902f6a am: 1410b5034f am: 8b35cb563d  -s ours am: 71676a9dc4  -s ours am: 6a2a3ed69e
am: f63f606a8e

Change-Id: I15845a3e06589f6e2ab65264c64f783069cee498