libavformat/flvdec.c:391: error: Uninitialized Value
  The value read from flags was never initialized.

libavformat/flvdec.c:391:49: 
389.             else
390.                 st->codec->sample_rate = (44100 << ((flags & FLV_AUDIO_SAMPLERATE_MASK) >> FLV_AUDIO_SAMPLERATE_OFFSET) >> 3);
391.             st->codec->bits_per_coded_sample = (flags & FLV_AUDIO_SAMPLESIZE_MASK) ? 16 : 8;
                                                     ^
392.             flv_set_audio_codec(s, st, flags & FLV_AUDIO_CODECID_MASK);
393.         }
