[automerger] Handle bad bitrate index in mp3dec. am: 8b638123 am: 1c388693...

[automerger] Handle bad bitrate index in mp3dec. am: 8b638123 am: 1c388693 am: d1cd373b am: b589cde3 am: c512ab83 am: 1527d621 am: 93783a21 am: 04ba4099 am: c8d96838 am: 2bd167ec am: 3f60a22f am: 2c3a8890
am: 4db55b03

Change-Id: I400fbed562ed105a0f701f13d8300e85b736d942