libavformat/rmdec.c:661: error: Uninitialized Value
  The value read from len2 was never initialized.

libavformat/rmdec.c:661:9: 
659.     if((seq & 0x7F) == 1 || vst->curpic_num != pic_num){
660.         vst->slices = ((hdr & 0x3F) << 1) + 1;
661.         vst->videobufsize = len2 + 8*vst->slices + 1;
             ^
662.         av_packet_unref(&vst->pkt); //FIXME this should be output.
663.         if(av_new_packet(&vst->pkt, vst->videobufsize) < 0)
