From dae0af24cd19d8c533ab4f89ea7eda8e495ed92a Mon Sep 17 00:00:00 2001
From: Thomas Bruederli <bruederli@kolabsys.com>
Date: Wed, 16 Oct 2013 12:30:20 +0200
Subject: [PATCH] Avoid warnings if libcalendaring env variables are not set
 (#2356)

---
 plugins/libcalendaring/libcalendaring.js | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/plugins/libcalendaring/libcalendaring.js b/plugins/libcalendaring/libcalendaring.js
index 73d1c1ec..5dcc3d46 100644
--- a/plugins/libcalendaring/libcalendaring.js
+++ b/plugins/libcalendaring/libcalendaring.js
@@ -23,12 +23,16 @@
 function rcube_libcalendaring(settings)
 {
     // member vars
-    this.settings = settings;
+    this.settings = settings || {};
     this.alarm_ids = [];
     this.alarm_dialog = null;
     this.snooze_popup = null;
     this.dismiss_link = null;
 
+    // abort if env isn't set
+    if (!settings || !settings.date_format)
+      return;
+
     // private vars
     var me = this;
     var gmt_offset = (new Date().getTimezoneOffset() / -60) - (settings.timezone || 0) - (settings.dst || 0);