From 71c7197ea4d1312e1e73ab7c2d8c1beb5241e17d Mon Sep 17 00:00:00 2001
From: John Foerch <jjfoerch@earthlink.net>
Date: Thu, 16 Feb 2012 01:44:00 -0500
Subject: [PATCH] compute_up_url: fix missing property error, XULRunner>=9

resolves issue398
---
 modules/utils.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/modules/utils.js b/modules/utils.js
index b9b8575..0de40c5 100644
--- a/modules/utils.js
+++ b/modules/utils.js
@@ -505,7 +505,7 @@ function scroll_selection_into_view (field) {
 function compute_up_url (uri) {
     uri = uri.clone().QueryInterface(Ci.nsIURL);
     for (let [k, p] in Iterator(["ref", "query", "param", "fileName"])) {
-        if (uri[p] != "") {
+        if (p in uri && uri[p] != "") {
             uri[p] = "";
             return uri.spec;
         }
-- 
2.11.4.GIT