[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_hashlimit.c b/net/netfilter/xt_hashlimit.c
index deb5890..094da6e 100644
--- a/net/netfilter/xt_hashlimit.c
+++ b/net/netfilter/xt_hashlimit.c
@@ -239,7 +239,7 @@
 static bool select_gc(const struct xt_hashlimit_htable *ht,
 		      const struct dsthash_ent *he)
 {
-	return (jiffies >= he->expires);
+	return jiffies >= he->expires;
 }
 
 static void htable_selective_cleanup(struct xt_hashlimit_htable *ht,