libavcodec/mp3_header_decompress_bsf.c:71: error: Uninitialized Value
  The value read from frame_size was never initialized.

libavcodec/mp3_header_decompress_bsf.c:71:5: 
69.     header |= (frame_size == buf_size + 4)<<16; //FIXME actually set a correct crc instead of 0
70. 
71.     *poutbuf_size= frame_size;
        ^
72.     *poutbuf= av_malloc(frame_size + FF_INPUT_BUFFER_PADDING_SIZE);
73.     memcpy(*poutbuf + frame_size - buf_size, buf, buf_size + FF_INPUT_BUFFER_PADDING_SIZE);
