avfilter/vf_premultiply: remove redundant semicolons

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

libavfilter/vf_premultiply.c

@@ -99,7 +99,7 @@ static void premultiply8yuv(const uint8_t *msrc, const uint8_t *asrc,
 
     for (y = 0; y < h; y++) {
         for (x = 0; x < w; x++) {
-            dst[x] = ((((msrc[x] - 128) * (((asrc[x] >> 1) & 1) + asrc[x]))) >> 8) + 128;;
+            dst[x] = ((((msrc[x] - 128) * (((asrc[x] >> 1) & 1) + asrc[x]))) >> 8) + 128;
         }
 
         dst  += dlinesize;
@@ -165,7 +165,7 @@ static void premultiply16yuv(const uint8_t *mmsrc, const uint8_t *aasrc,
 
     for (y = 0; y < h; y++) {
         for (x = 0; x < w; x++) {
-            dst[x] = ((((msrc[x] - half) * (((asrc[x] >> 1) & 1) + asrc[x]))) >> shift) + half;;
+            dst[x] = ((((msrc[x] - half) * (((asrc[x] >> 1) & 1) + asrc[x]))) >> shift) + half;
         }
 
         dst  += dlinesize / 2;