(dos-windows-version): Add defvar.

diff --git a/lisp/net/browse-url.el b/lisp/net/browse-url.el
index cd5c2d41f98528710b723b357730c352c71203eb..87e3dcab5a347a34fe5c379819d3db8f8ae52850 100644 (file)
--- a/lisp/net/browse-url.el
+++ b/lisp/net/browse-url.el
@@ -799,6 +799,8 @@ to use."
 
 ;; --- Default MS-Windows browser ---
 
+(defvar dos-windows-version)
+
 (defun browse-url-default-windows-browser (url &optional new-window)
   (interactive (browse-url-interactive-arg "URL: "))
   (if (eq system-type 'ms-dos)