Fixed memory leak in GotoDialog.

git-svn-id: svn://svn.sharpdevelop.net/sharpdevelop/trunk@4792 1ccf3a8d-04fe-1044-b7c0-cef0b8235c61

src/Main/Base/Project/Src/TextEditor/Gui/Dialogs/GotoDialog.cs

@@ -46,6 +46,13 @@ namespace ICSharpCode.SharpDevelop.Gui
 			textBox.Focus();
 		}
 		
+		protected override void OnClosed(EventArgs e)
+		{
+			Instance = null;
+			ParserService.LoadSolutionProjectsThreadEnded -= ParserService_LoadSolutionProjectsThreadEnded;
+			base.OnClosed(e);
+		}
+		
 		void ParserService_LoadSolutionProjectsThreadEnded(object sender, EventArgs e)
 		{
 			// refresh the list box contents when parsing has completed
@@ -119,12 +126,6 @@ namespace ICSharpCode.SharpDevelop.Gui
 			return emptyList;
 		}
 		
-		protected override void OnClosed(EventArgs e)
-		{
-			Instance = null;
-			base.OnClosed(e);
-		}
-		
 		Dictionary<string, object> visibleEntries = new Dictionary<string, object>();
 		int bestMatchType;
 		double bestPriority;