libavformat/flvdec.c:868: error: Uninitialized Value
  The value read from flags was never initialized.

libavformat/flvdec.c:868:34: 
866.         sample_rate = 44100 << ((flags & FLV_AUDIO_SAMPLERATE_MASK) >>
867.                                 FLV_AUDIO_SAMPLERATE_OFFSET) >> 3;
868.         bits_per_coded_sample = (flags & FLV_AUDIO_SAMPLESIZE_MASK) ? 16 : 8;
                                      ^
869.         if (!st->codecpar->channels || !st->codecpar->sample_rate ||
870.             !st->codecpar->bits_per_coded_sample) {
