From 1875f1ed00cb73090e247cb71df92f32beb2aa5a Mon Sep 17 00:00:00 2001
From: Dan Helfman <dan@luminotes.com>
Date: Thu, 11 Oct 2007 10:07:27 +0000
Subject: [PATCH] Fix for case where revisions list doesn't yet exist.

---
 static/js/Wiki.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/static/js/Wiki.js b/static/js/Wiki.js
index 76a2c9a..22dcf32 100644
--- a/static/js/Wiki.js
+++ b/static/js/Wiki.js
@@ -1141,7 +1141,7 @@ Wiki.prototype.toggle_editor_changes = function ( event, editor ) {
   event.stop();
 
   // if there's already a cached revision list, display the changes pulldown with it
-  if ( editor.revisions_list.length > 0 ) {
+  if ( editor.revisions_list && editor.revisions_list.length > 0 ) {
     new Changes_pulldown( this, this.notebook_id, this.invoker, editor );
     return;
   }