[NETFILTER]: Remove redundant parentheses/braces

Removes redundant parentheses and braces (And add one pair in a
xt_tcpudp.c macro).

Signed-off-by: Jan Engelhardt <jengelh@gmx.de>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/netfilter/xt_DSCP.c b/net/netfilter/xt_DSCP.c
index 2d779f6..ed6b524 100644
--- a/net/netfilter/xt_DSCP.c
+++ b/net/netfilter/xt_DSCP.c
@@ -74,7 +74,7 @@
 {
 	const u_int8_t dscp = ((struct xt_DSCP_info *)targinfo)->dscp;
 
-	if ((dscp > XT_DSCP_MAX)) {
+	if (dscp > XT_DSCP_MAX) {
 		printk(KERN_WARNING "DSCP: dscp %x out of range\n", dscp);
 		return false;
 	}