libavcodec/rv40.c:369: error: Uninitialized Value
  The value read from diff_q1q0[_] was never initialized.

libavcodec/rv40.c:369:13: 
367.     }else if(filter_p1 && filter_q1){
368.         for(i = 0; i < 4; i++, src += stride)
369.             rv40_weak_loop_filter(src, step, 1, 1, alpha, beta, lims, lim_q1, lim_p1,
                 ^
370.                                   diff_p1p0[i], diff_q1q0[i], diff_p1p2[i], diff_q1q2[i]);
371.     }else{
