cred: Add forward declaration of init_user_ns in all cases.

Acked-by: Serge Hallyn <serge.hallyn@canonical.com>
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
diff --git a/include/linux/cred.h b/include/linux/cred.h
index adadf71..d12c4e4 100644
--- a/include/linux/cred.h
+++ b/include/linux/cred.h
@@ -357,11 +357,11 @@
 #define current_user()		(current_cred_xxx(user))
 #define current_security()	(current_cred_xxx(security))
 
+extern struct user_namespace init_user_ns;
 #ifdef CONFIG_USER_NS
 #define current_user_ns()	(current_cred_xxx(user_ns))
 #define task_user_ns(task)	(task_cred_xxx((task), user_ns))
 #else
-extern struct user_namespace init_user_ns;
 #define current_user_ns()	(&init_user_ns)
 #define task_user_ns(task)	(&init_user_ns)
 #endif