progs/trivial: Redraw upon keypress.
diff --git a/progs/trivial/tri-lit.c b/progs/trivial/tri-lit.c
index 15a7ad2..26ebd99 100644
--- a/progs/trivial/tri-lit.c
+++ b/progs/trivial/tri-lit.c
@@ -65,7 +65,7 @@
       case 27:
 	exit(1);
       default:
-	return;
+	break;
     }
 
     glutPostRedisplay();