vc-auto-revert-mode: Fix an autoload problem

* lisp/vc/vc-hooks.el (auto-revert-mode): Replace compiler
declaration for this variable with a full defvar-local.

1 files changed, 4 insertions, 1 deletions

diff --git a/lisp/vc/vc-hooks.el b/lisp/vc/vc-hooks.el
index e03313b5730..60aa0cf9927 100644
--- a/lisp/vc/vc-hooks.el
+++ b/lisp/vc/vc-hooks.el
@@ -210,7 +210,10 @@ VC commands are globally reachable under the prefix \\[vc-prefix-map]:
 \\{vc-prefix-map}"
   nil)
 
-(defvar auto-revert-mode)
+;; A compiler declaration (defvar auto-revert-mode) is not enough here
+;; because `define-globalized-minor-mode' wants to check the variable's
+;; value before causing autorevert.el to be autoloaded.
+(defvar-local auto-revert-mode nil)
 (define-globalized-minor-mode vc-auto-revert-mode auto-revert-mode
   vc-turn-on-auto-revert-mode-for-tracked-files
   :group 'vc