SD2-843. When editing XML file with url dtd reference whilst having no network connection the WebException is now caught by the XML Editor.

git-svn-id: svn://svn.sharpdevelop.net/sharpdevelop/trunk@1506 1ccf3a8d-04fe-1044-b7c0-cef0b8235c61

src/AddIns/DisplayBindings/XmlEditor/Project/Src/XmlParser.cs

@@ -8,6 +8,7 @@
 using System;
 using System.Collections;
 using System.IO;
+using System.Net;
 using System.Text;
 using System.Text.RegularExpressions;
 using System.Xml;
@@ -128,6 +129,8 @@ namespace ICSharpCode.XmlEditor
 				}
 			} catch (XmlException) { 
 				// Do nothing.
+			} catch (WebException) {
+				// Do nothing.
 			}
 			
 			path.Compact();