vc-resynch-window: Check whether auto-revert-mode is bound

* lisp/vc/vc-dispatcher.el (auto-revert-mode): Delete
declaration.
(vc-resynch-window): Check whether auto-revert-mode is bound.

1 files changed, 1 insertions, 2 deletions

diff --git a/lisp/vc/vc-dispatcher.el b/lisp/vc/vc-dispatcher.el
index d16e2fbb8d9..48ac8a11682 100644
--- a/lisp/vc/vc-dispatcher.el
+++ b/lisp/vc/vc-dispatcher.el
@@ -679,7 +679,6 @@ ARG and NO-CONFIRM are passed on to `revert-buffer'."
 
 (defvar view-old-buffer-read-only)
 
-(defvar auto-revert-mode)
 (declare-function auto-revert-buffers "autorevert")
 
 (defun vc-resynch-window (file &optional keep noquery reset-vc-info)
@@ -703,7 +702,7 @@ editing!"
               ;; `global-auto-revert-mode' or `vc-auto-revert-mode')
               ;; then defer to that.  Otherwise we do our own
               ;; VC-specific reverting.
-              (if (and auto-revert-mode noquery)
+              (if (and (bound-and-true-p auto-revert-mode) noquery)
                   (auto-revert-buffers)
                 (vc-revert-buffer-internal t noquery))