Update DescriptionXmlBuilder.cs

Emby.Dlna/Server/DescriptionXmlBuilder.cs

@@ -4,7 +4,7 @@ using System;
 using System.Collections.Generic;
 using System.Globalization;
 using System.Linq;
-using System.Security;a
+using System.Security;
 using System.Text;
 using Emby.Dlna.Common;
 using MediaBrowser.Model.Dlna;