libavcodec/decode.c:661: error: Uninitialized Value
  The value read from ret was never initialized.

libavcodec/decode.c:661:40: 
659.     }
660.     avci->compat_decode_consumed = 0;
661.     avci->compat_decode_partial_size = (ret >= 0) ? pkt->size - ret : 0;
                                            ^
662. 
663.     return ret;
