avcodec/cavs: use av_mallocz_array()

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

libavcodec/cavs.c

@@ -742,16 +742,16 @@ void ff_cavs_init_top_lines(AVSContext *h)
 {
     /* alloc top line of predictors */
     h->top_qp       = av_mallocz(h->mb_width);
-    h->top_mv[0]    = av_mallocz((h->mb_width * 2 + 1) * sizeof(cavs_vector));
-    h->top_mv[1]    = av_mallocz((h->mb_width * 2 + 1) * sizeof(cavs_vector));
-    h->top_pred_Y   = av_mallocz(h->mb_width * 2 * sizeof(*h->top_pred_Y));
-    h->top_border_y = av_mallocz((h->mb_width + 1) * 16);
-    h->top_border_u = av_mallocz(h->mb_width * 10);
-    h->top_border_v = av_mallocz(h->mb_width * 10);
+    h->top_mv[0]    = av_mallocz_array(h->mb_width * 2 + 1,  sizeof(cavs_vector));
+    h->top_mv[1]    = av_mallocz_array(h->mb_width * 2 + 1,  sizeof(cavs_vector));
+    h->top_pred_Y   = av_mallocz_array(h->mb_width * 2,  sizeof(*h->top_pred_Y));
+    h->top_border_y = av_mallocz_array(h->mb_width + 1,  16);
+    h->top_border_u = av_mallocz_array(h->mb_width,  10);
+    h->top_border_v = av_mallocz_array(h->mb_width,  10);
 
     /* alloc space for co-located MVs and types */
-    h->col_mv        = av_mallocz(h->mb_width * h->mb_height * 4 *
-                                  sizeof(cavs_vector));
+    h->col_mv        = av_mallocz_array(h->mb_width * h->mb_height,
+                                        4 * sizeof(cavs_vector));
     h->col_type_base = av_mallocz(h->mb_width * h->mb_height);
     h->block         = av_mallocz(64 * sizeof(int16_t));
 }