progs/fp: Redraw upon keypress.
diff --git a/progs/fp/fp-tri.c b/progs/fp/fp-tri.c
index 52a8fcf..26af66a 100644
--- a/progs/fp/fp-tri.c
+++ b/progs/fp/fp-tri.c
@@ -197,7 +197,7 @@
       case 27:
 	exit(1);
       default:
-	return;
+	break;
     }
 
     glutPostRedisplay();