bgmc: fix sizeof arguments

CC: libav-devel@libav.org
Bug-Id: CID 608084 / CID 700724

libavcodec/bgmc.c

@@ -460,8 +460,8 @@ static uint8_t *bgmc_lut_getp(uint8_t *lut, int *lut_status, int delta)
 av_cold int ff_bgmc_init(AVCodecContext *avctx,
                          uint8_t **cf_lut, int **cf_lut_status)
 {
-    *cf_lut        = av_malloc(sizeof(*cf_lut)        * LUT_BUFF * 16 * LUT_SIZE);
-    *cf_lut_status = av_malloc(sizeof(*cf_lut_status) * LUT_BUFF);
+    *cf_lut        = av_malloc(sizeof(**cf_lut)        * LUT_BUFF * 16 * LUT_SIZE);
+    *cf_lut_status = av_malloc(sizeof(**cf_lut_status) * LUT_BUFF);
 
     if (!*cf_lut || !*cf_lut_status) {
         ff_bgmc_end(cf_lut, cf_lut_status);
@@ -469,7 +469,7 @@ av_cold int ff_bgmc_init(AVCodecContext *avctx,
         return AVERROR(ENOMEM);
     } else {
         // initialize lut_status buffer to a value never used to compare against
-        memset(*cf_lut_status, -1, sizeof(*cf_lut_status) * LUT_BUFF);
+        memset(*cf_lut_status, -1, sizeof(**cf_lut_status) * LUT_BUFF);
     }
 
     return 0;