From 47971b589773eb35ac706502ce5e4385eeee0733 Mon Sep 17 00:00:00 2001
From: "vladimir%pobox.com" <vladimir%pobox.com>
Date: Mon, 23 May 2005 21:18:37 +0000
Subject: [PATCH] unknown property access on objects doesn't throw exceptions

---
 calendar/resources/content/calendarUtils.js | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/calendar/resources/content/calendarUtils.js b/calendar/resources/content/calendarUtils.js
index b321693c414..4b4861824c9 100644
--- a/calendar/resources/content/calendarUtils.js
+++ b/calendar/resources/content/calendarUtils.js
@@ -188,9 +188,10 @@ function guessSystemTimezone()
     dump("Guessing system timezone:\n");
     dump("offset  : " + offset + "\ntimezone: " + timezone + "\n");
 
-    try {
-        return tzTable[offset + " " + timezone];
-    } catch(ex) {
+    var tzindex = offset + " " + timezone;
+    if (tzindex in tzTable) {
+        return tzTable[tzindex];
+    } else {
         // XXX we don't really have a better option here
         return "floating";
     }