libavcodec/rv40.c:373: error: Uninitialized Value
  The value read from diff_q1q0[_] was never initialized.

libavcodec/rv40.c:373:13: 
371.     }else{
372.         for(i = 0; i < 4; i++, src += stride)
373.             rv40_weak_loop_filter(src, step, filter_p1, filter_q1,
                 ^
374.                                   alpha, beta, lims>>1, lim_q1>>1, lim_p1>>1,
375.                                   diff_p1p0[i], diff_q1q0[i], diff_p1p2[i], diff_q1q2[i]);
