avcodec/hevc: Replace more mallocs by av_malloc_array()

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

libavcodec/hevc.c

@@ -97,14 +97,14 @@ static int pic_arrays_init(HEVCContext *s, const HEVCSPS *sps)
     if (!s->sao || !s->deblock)
         goto fail;
 
-    s->skip_flag    = av_malloc(sps->min_cb_height * sps->min_cb_width);
+    s->skip_flag    = av_malloc_array(sps->min_cb_height, sps->min_cb_width);
     s->tab_ct_depth = av_malloc_array(sps->min_cb_height, sps->min_cb_width);
     if (!s->skip_flag || !s->tab_ct_depth)
         goto fail;
 
     s->cbf_luma = av_malloc_array(sps->min_tb_width, sps->min_tb_height);
     s->tab_ipm  = av_mallocz(min_pu_size);
-    s->is_pcm   = av_malloc((sps->min_pu_width + 1) * (sps->min_pu_height + 1));
+    s->is_pcm   = av_malloc_array(sps->min_pu_width + 1, sps->min_pu_height + 1);
     if (!s->tab_ipm || !s->cbf_luma || !s->is_pcm)
         goto fail;