UI thread is more explicit about what functions it accepts and now accepts no parameter functions.

PrinterControls/PrinterConnections/SetupConnectionWidgetBase.cs

@@ -118,7 +118,7 @@ namespace MatterHackers.MatterControl.PrinterControls.PrinterConnections
 			}
 			else
 			{
-				UiThread.RunOnIdle((state) =>
+				UiThread.RunOnIdle(() =>
 				{
 					Parent.Close();
 				});