shortened InvokeLeakTests

UnitTests/MainLoopTests.cs

@@ -578,9 +578,9 @@ namespace Terminal.Gui.Core {
 			TextField tf = new ();
 			Application.Top.Add (tf);
 
-			const int numPasses = 10;
-			const int numIncrements = 10000;
-			const int pollMs = 20000;
+			const int numPasses = 5;
+			const int numIncrements = 5000;
+			const int pollMs = 10000;
 
 			var task = Task.Run (() => RunTest (r, tf, numPasses, numIncrements, pollMs));
 

UnitTests/ScenarioTests.cs

@@ -64,7 +64,7 @@ namespace UICatalog {
 				Application.Init (new FakeDriver (), new FakeMainLoop (() => FakeConsole.ReadKey (true)));
 
 				// Close after a short period of time
-				var token = Application.MainLoop.AddTimeout (TimeSpan.FromMilliseconds (200), closeCallback);
+				var token = Application.MainLoop.AddTimeout (TimeSpan.FromMilliseconds (100), closeCallback);
 
 				scenario.Init (Application.Top, Colors.Base);
 				scenario.Setup ();