Fix tramp-tests, broken by incompatible vc.el change

* test/automated/tramp-tests.el (tramp-test29-vc-registered):
Update for recent incompatible change in vc-register.

test/ChangeLog

+2014-12-03  Glenn Morris  <rgm@gnu.org>
+
+	* automated/tramp-tests.el (tramp-test29-vc-registered):
+	Update for recent incompatible change in vc-register.
+
 2014-11-29  Fabián Ezequiel Gallina  <fgallina@gnu.org>
 
 	* automated/python-tests.el

test/automated/tramp-tests.el

@@ -1470,8 +1470,8 @@ This tests also `make-symbolic-link', `file-truename' and `add-name-to-file'."
 	    ;; The structure of VC-FILESET is not documented.  Let's
 	    ;; hope it won't change.
 	    (vc-register
-	     nil (list (car vc-handled-backends)
-		       (list (file-name-nondirectory tmp-name2)))))
+	     (list (car vc-handled-backends)
+		   (list (file-name-nondirectory tmp-name2)))))
 	  (should (vc-registered tmp-name2)))
 
 	(ignore-errors (delete-directory tmp-name1 'recursive)))))