From 820b509eb362089908ffe4df6f91138e639272f6 Mon Sep 17 00:00:00 2001
From: Martin Stubenschrott <stubenschrott@vimperator.org>
Date: Sat, 15 Aug 2009 18:04:38 +0200
Subject: [PATCH] Fix ;<up> throwing an error

---
 common/content/ui.js | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/common/content/ui.js b/common/content/ui.js
index ad138466..7a4820f5 100755
--- a/common/content/ui.js
+++ b/common/content/ui.js
@@ -1300,7 +1300,10 @@ function CommandLine() //{{{
                     event.preventDefault();
                     event.stopPropagation();
 
-                    history.select(/Up/.test(key), !/(Page|S-)/.test(key));
+                    if (history)
+                        history.select(/Up/.test(key), !/(Page|S-)/.test(key));
+                    else
+                        liberator.beep();
                     return false;
                 }
                 // user pressed TAB to get completions of a command