net: return operator cleanup

Change "return (EXPR);" to "return EXPR;"

return is not a function, parentheses are not required.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv6/exthdrs_core.c b/net/ipv6/exthdrs_core.c
index e1caa5d..14ed0a9 100644
--- a/net/ipv6/exthdrs_core.c
+++ b/net/ipv6/exthdrs_core.c
@@ -13,12 +13,12 @@
 	/*
 	 * find out if nexthdr is an extension header or a protocol
 	 */
-	return ( (nexthdr == NEXTHDR_HOP)	||
+	return   (nexthdr == NEXTHDR_HOP)	||
 		 (nexthdr == NEXTHDR_ROUTING)	||
 		 (nexthdr == NEXTHDR_FRAGMENT)	||
 		 (nexthdr == NEXTHDR_AUTH)	||
 		 (nexthdr == NEXTHDR_NONE)	||
-		 (nexthdr == NEXTHDR_DEST) );
+		 (nexthdr == NEXTHDR_DEST);
 }
 
 /*