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
am: 85b1910cf5  -s ours

Change-Id: I9da4103cd7d6b59caedae21c935bb5a6cb20b031