avcodec/resample2: Use av_malloc(z)_array()

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

libavcodec/resample2.c

@@ -102,7 +102,7 @@ static double bessel(double x){
 static int build_filter(FELEM *filter, double factor, int tap_count, int phase_count, int scale, int type){
     int ph, i;
     double x, y, w;
-    double *tab = av_malloc(tap_count * sizeof(*tab));
+    double *tab = av_malloc_array(tap_count, sizeof(*tab));
     const int center= (tap_count-1)/2;
 
     if (!tab)
@@ -202,7 +202,7 @@ AVResampleContext *av_resample_init(int out_rate, int in_rate, int filter_size,
     c->linear= linear;
 
     c->filter_length= FFMAX((int)ceil(filter_size/factor), 1);
-    c->filter_bank= av_mallocz(c->filter_length*(phase_count+1)*sizeof(FELEM));
+    c->filter_bank= av_mallocz_array(c->filter_length, (phase_count+1)*sizeof(FELEM));
     if (!c->filter_bank)
         goto error;
     if (build_filter(c->filter_bank, factor, c->filter_length, phase_count, 1<<FILTER_SHIFT, WINDOW_TYPE))