libavformat/rmdec.c:494: error: Uninitialized Value
  The value read from seq was never initialized.

libavformat/rmdec.c:494:8: 
492.     //now we have to deal with single slice
493. 
494.     if((seq & 0x7F) == 1 || rm->curpic_num != pic_num){
            ^
495.         rm->slices = ((hdr & 0x3F) << 1) + 1;
496.         rm->videobufsize = len2 + 8*rm->slices + 1;
