libavformat/rmdec.c:529: error: Uninitialized Value
  The value read from pic_num was never initialized.

libavformat/rmdec.c:529:9: 
527.         vst->videobufpos = 8*vst->slices + 1;
528.         vst->cur_slice = 0;
529.         vst->curpic_num = pic_num;
             ^
530.         vst->pktpos = url_ftell(pb);
531.     }
