From 6e4eabd1a083fc9bd2000900fe00661f8e1cd1d9 Mon Sep 17 00:00:00 2001
From: Vivien Nicolas <21@vingtetun.org>
Date: Fri, 4 May 2012 20:05:40 +0200
Subject: [PATCH] Bug 748895 - Error message if an error message arrived after
 the destruction of the console binding. r=enndeakin

---
 toolkit/components/console/content/consoleBindings.xml | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/toolkit/components/console/content/consoleBindings.xml b/toolkit/components/console/content/consoleBindings.xml
index fab5f90eaf7c..bfbc38211867 100644
--- a/toolkit/components/console/content/consoleBindings.xml
+++ b/toolkit/components/console/content/consoleBindings.xml
@@ -80,7 +80,12 @@
           
           this.mConsoleListener = {
             console: this, 
-            observe : function(aObject) { this.console.appendItem(aObject); }
+            observe : function(aObject) {
+              // The message can arrive a little bit after the xbl binding has been
+              // unbind. So node.appendItem will not be available anymore.
+              if ('appendItem' in this.console)
+                this.console.appendItem(aObject);
+            }
           };
           
           this.mConsoleRowBox = document.getAnonymousElementByAttribute(this, "role", "console-rows");