user.c: make uidhash_table static

Fix the following sparse warning:

  kernel/user.c:85:19: warning: symbol 'uidhash_table' was not declared.
  Should it be static?

Reported-by: Hulk Robot <[email protected]>
Signed-off-by: Jason Yan <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Cc: David Howells <[email protected]>
Cc: Greg Kroah-Hartman <[email protected]>
Cc: Rasmus Villemoes <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Linus Torvalds <[email protected]>

kernel/user.c

@@ -82,7 +82,7 @@ EXPORT_SYMBOL_GPL(init_user_ns);
 #define uidhashentry(uid)	(uidhash_table + __uidhashfn((__kuid_val(uid))))
 
 static struct kmem_cache *uid_cachep;
-struct hlist_head uidhash_table[UIDHASH_SZ];
+static struct hlist_head uidhash_table[UIDHASH_SZ];
 
 /*
  * The uidhash_lock is mostly taken from process context, but it is