Fixed NullReferenceException in the exception handling code for the forms designer initialization when an exception is thrown before the DesignSurface is created.

git-svn-id: svn://svn.sharpdevelop.net/sharpdevelop/branches/2.1@2525 1ccf3a8d-04fe-1044-b7c0-cef0b8235c61

src/AddIns/DisplayBindings/FormsDesigner/Project/Src/DesignerViewContent.cs

@@ -243,7 +243,7 @@ namespace ICSharpCode.FormsDesigner
 					errorText.Text = e.InnerException.Message;
 				} else if (e is FormsDesignerLoadException) {
 					errorText.Text = e.Message;
-				} else if (!designSurface.IsLoaded && designSurface.LoadErrors != null) {
+				} else if (designSurface != null && !designSurface.IsLoaded && designSurface.LoadErrors != null) {
 					errorText.Text = StringParser.Parse("${res:ICSharpCode.SharpDevelop.FormDesigner.ErrorLoadingDesigner}\r\n\r\n");
 					foreach(Exception le in designSurface.LoadErrors) {
 						errorText.Text += le.ToString();