From 29eaffc6d459dfe4deed80d59f7af064716cf157 Mon Sep 17 00:00:00 2001
From: Hylke Bons <hylkebons@gmail.com>
Date: Wed, 11 Jul 2012 22:31:45 +0200
Subject: [PATCH] config: Don't accept null values as identifiers

---
 SparkleLib/SparkleConfig.cs | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/SparkleLib/SparkleConfig.cs b/SparkleLib/SparkleConfig.cs
index ccc643d5..0365a8c5 100755
--- a/SparkleLib/SparkleConfig.cs
+++ b/SparkleLib/SparkleConfig.cs
@@ -277,6 +277,9 @@ namespace SparkleLib {
 
         public bool IdentifierExists (string identifier)
         {
+            if (identifier == null)
+                throw new ArgumentNullException ();
+
             foreach (XmlNode node_folder in SelectNodes ("/sparkleshare/folder")) {
                 XmlElement folder_id = node_folder ["identifier"];