[patch] cifs: update a check for NULL function pointer

[Dan Carpenter <dan.carpenter-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>]

We changed the function call from ->close() to ->close_dir() so we
should update the test for NULL as well.

Both of them probably work, but my static checker complains when we have
a check for a NULL function pointer and then immediately call a
different function pointer.  This is a common cut and paste error.

Signed-off-by: Dan Carpenter <dan.carpenter-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>

diff --git a/fs/cifs/readdir.c b/fs/cifs/readdir.c
index 41e52e2..d2141f1 100644
--- a/fs/cifs/readdir.c
+++ b/fs/cifs/readdir.c
@@ -592,7 +592,7 @@ find_cifs_entry(const unsigned int xid, struct cifs_tcon *tcon, loff_t pos,
 		if (server->ops->dir_needs_close(cfile)) {
 			cfile->invalidHandle = true;
 			spin_unlock(&cifs_file_list_lock);
-			if (server->ops->close)
+			if (server->ops->close_dir)
 				server->ops->close_dir(xid, tcon, &cfile->fid);
 		} else
 			spin_unlock(&cifs_file_list_lock);