[PATCH] Fix net/core/sock.o build failure

This fixes a build failure that happens when you don't select IPV6.
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

include/linux/ipv6.h

@@ -273,6 +273,7 @@ struct tcp6_sock {
 	struct ipv6_pinfo inet6;
 };
 
+#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
 static inline struct ipv6_pinfo * inet6_sk(const struct sock *__sk)
 {
 	return inet_sk(__sk)->pinet6;
@@ -283,7 +284,6 @@ static inline struct raw6_opt * raw6_sk(const struct sock *__sk)
 	return &((struct raw6_sock *)__sk)->raw6;
 }
 
-#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
 #define __ipv6_only_sock(sk)	(inet6_sk(sk)->ipv6only)
 #define ipv6_only_sock(sk)	((sk)->sk_family == PF_INET6 && __ipv6_only_sock(sk))
 #else