demos: add some fflushes for windows
diff --git a/progs/demos/arbfplight.c b/progs/demos/arbfplight.c
index 401bfb4..7b7a12b 100644
--- a/progs/demos/arbfplight.c
+++ b/progs/demos/arbfplight.c
@@ -92,6 +92,7 @@
 	 GLfloat seconds = (t - T0) / 1000.0;
 	 GLfloat fps = Frames / seconds;
 	 printf("%d frames in %6.3f seconds = %6.3f FPS\n", Frames, seconds, fps);
+         fflush(stdout);
 	 T0 = t;
 	 Frames = 0;
       }