libavformat/flvdec.c:387: error: Uninitialized Value
  The value read from flags was never initialized.

libavformat/flvdec.c:387:16: 
385.         if(!st->codec->sample_rate || !st->codec->bits_per_coded_sample || (!st->codec->codec_id && !st->codec->codec_tag)) {
386.             st->codec->channels = (flags & FLV_AUDIO_CHANNEL_MASK) == FLV_STEREO ? 2 : 1;
387.             if((flags & FLV_AUDIO_CODECID_MASK) == FLV_CODECID_NELLYMOSER_8KHZ_MONO)
                    ^
388.                 st->codec->sample_rate= 8000;
389.             else
