dv: change assert(a2 < 4) to av_assert()

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

libavcodec/dv.c

@@ -627,7 +627,7 @@ static inline void dv_guess_qnos(EncBlockInfo* blks, int* qnos)
                            if (b->next[k] >= mb_area_start[a+1] && b->next[k]<64){
                                 for (a2 = a + 1; b->next[k] >= mb_area_start[a2+1]; a2++)
                                     b->prev[a2] = prev;
-                                assert(a2 < 4);
+                                av_assert2(a2 < 4);
                                 assert(b->mb[b->next[k]]);
                                 b->bit_size[a2] += dv_rl2vlc_size(b->next[k] - prev - 1, b->mb[b->next[k]])
                                                   -dv_rl2vlc_size(b->next[k] -    k - 1, b->mb[b->next[k]]);