DirectWindowStars: Fixed 64-bit build

src/tests/kits/game/direct_window_test/StarWindow.cpp

@@ -518,7 +518,7 @@ StarWindow::SwitchContext(direct_buffer_info *info)
 
 // This is the thread doing the star animation itself. It would be easy to
 // adapt to do any other sort of pixel animation.
-long
+status_t
 StarWindow::StarAnimation(void *data)
 {
 	star			*s;

src/tests/kits/game/direct_window_test/StarWindow.h

@@ -43,7 +43,7 @@ private:
 inline	void	CrcStep();
 
 		// the drawing thread function.
-static	long	StarAnimation(void *data);
+static	status_t	StarAnimation(void *data);
 
 		// struct used to control each star.
 		typedef struct {