[PATCH] Remove NULL check in register_nls()

Everybody passes valid pointer there.
Signed-off-by: NAlexey Dobriyan <adobriyan@gmail.com>
Acked-by: NOGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

fs/nls/nls_base.c

@@ -163,8 +163,6 @@ int register_nls(struct nls_table * nls)
 {
 	struct nls_table ** tmp = &tables;
 
-	if (!nls)
-		return -EINVAL;
 	if (nls->next)
 		return -EBUSY;