(minor-mode-map-alist): Don't use it if it's void.

diff --git a/lisp/vc.el b/lisp/vc.el
index 3bd5cda97a52e1839458dba08fbab0ae6ba2b181..bd49eba4e459013b19a2d2fecd3f14f358c406ad 100644 (file)
--- a/lisp/vc.el
+++ b/lisp/vc.el
@@ -812,9 +812,10 @@ the variable vc-header-alist"
 (defvar vc-dired-prefix-map (make-sparse-keymap))
 (define-key vc-dired-prefix-map "\C-xv" vc-prefix-map)
 
-(or (assq 'vc-dired-mode minor-mode-map-alist)
+(or (not (boundp 'minor-mode-map-alist))
+    (assq 'vc-dired-mode minor-mode-map-alist)
     (setq minor-mode-map-alist
-          (cons '(vc-dired-mode vc-dired-prefix-map)
+          (cons '(vc-dired-mode . vc-dired-prefix-map)
                 minor-mode-map-alist)))
 
 (defun vc-dired-mode ()