avcodec/jpeg2000dwt: use av_malloc_array()

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

libavcodec/jpeg2000dwt.c

@@ -518,17 +518,17 @@ int ff_jpeg2000_dwt_init(DWTContext *s, uint16_t border[2][2],
         }
     switch (type) {
     case FF_DWT97:
-        s->f_linebuf = av_malloc((maxlen + 12) * sizeof(*s->f_linebuf));
+        s->f_linebuf = av_malloc_array((maxlen + 12), sizeof(*s->f_linebuf));
         if (!s->f_linebuf)
             return AVERROR(ENOMEM);
         break;
      case FF_DWT97_INT:
-        s->i_linebuf = av_malloc((maxlen + 12) * sizeof(*s->i_linebuf));
+        s->i_linebuf = av_malloc_array((maxlen + 12), sizeof(*s->i_linebuf));
         if (!s->i_linebuf)
             return AVERROR(ENOMEM);
         break;
     case FF_DWT53:
-        s->i_linebuf = av_malloc((maxlen +  6) * sizeof(*s->i_linebuf));
+        s->i_linebuf = av_malloc_array((maxlen +  6), sizeof(*s->i_linebuf));
         if (!s->i_linebuf)
             return AVERROR(ENOMEM);
         break;