move call to GetUriFromMatch before creation of new VisualLineLinkText

git-svn-id: svn://svn.sharpdevelop.net/sharpdevelop/trunk@5238 1ccf3a8d-04fe-1044-b7c0-cef0b8235c61

src/Libraries/AvalonEdit/ICSharpCode.AvalonEdit/Rendering/LinkElementGenerator.cs

@@ -88,10 +88,10 @@ namespace ICSharpCode.AvalonEdit.Rendering
 		{
 			Match m = GetMatch(offset);
 			if (m.Success && m.Index == 0) {
-				VisualLineLinkText linkText = new VisualLineLinkText(CurrentContext.VisualLine, m.Length);
 				Uri uri = GetUriFromMatch(m);
 				if (uri == null)
 					return null;
+				VisualLineLinkText linkText = new VisualLineLinkText(CurrentContext.VisualLine, m.Length);
 				linkText.NavigateUri = uri;
 				linkText.RequireControlModifierForClick = this.RequireControlModifierForClick;
 				return linkText;