libavcodec/h264_refs.c:520: error: Uninitialized Value
  The value read from j was never initialized.

libavcodec/h264_refs.c:520:5: 
518. 
519. int ff_h264_execute_ref_pic_marking(H264Context *h, MMCO *mmco, int mmco_count){
520.     int i, av_uninit(j);
         ^
521.     int current_ref_assigned=0, err=0;
522.     Picture *av_uninit(pic);
