[PATCH] fix inet6_sk for non IPV6 builds again

The recent ipv6 "fix" broke the build:

security/selinux/avc.c: In function `avc_audit':
security/selinux/avc.c:581: warning: implicit declaration of function `inet6_sk'
security/selinux/avc.c:581: warning: initialization makes pointer from integer without a cast
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

include/linux/ipv6.h

@@ -289,6 +289,17 @@ static inline struct raw6_opt * raw6_sk(const struct sock *__sk)
 #else
 #define __ipv6_only_sock(sk)	0
 #define ipv6_only_sock(sk)	0
+
+static inline struct ipv6_pinfo * inet6_sk(const struct sock *__sk)
+{
+	return NULL;
+}
+
+static inline struct raw6_opt * raw6_sk(const struct sock *__sk)
+{
+	return NULL;
+}
+
 #endif
 
 #endif