[automerger] Handle bad bitrate index in mp3dec. am: 8b63812376 am: 1c388693ae am: d1cd373be8 am: b589cde346 am: c512ab83dc am: 1527d62132 am: 93783a217f am: 04ba4099f3

Change-Id: I0ecd5c6baf15ecbac04a88ccebcdb66c11dc32fc