Remove parentheses

Originally committed as revision 18692 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavcodec/cook.c

@@ -1010,7 +1010,7 @@ static int cook_decode_frame(AVCodecContext *avctx,
 
     for(i=1;i<q->num_subpackets;i++){
         q->subpacket[i].size = 2 * buf[avctx->block_align - q->num_subpackets + i];
-        q->subpacket[0].size -= (q->subpacket[i].size + 1);
+        q->subpacket[0].size -= q->subpacket[i].size + 1;
     }
 
     /* decode supbackets */