[gnome-klotski] Delay setting settings.

[Arnaud B. <arnaudb src gnome org>]

commit c37ceabc9dd3c1e7732a99fad19fbfa9e2d6becf
Author: Arnaud Bonatti <arnaud bonatti gmail com>
Date:   Mon Feb 10 03:40:36 2020 +0100

    Delay setting settings.

 src/klotski-window.vala | 4 ++++
 1 file changed, 4 insertions(+)
---
diff --git a/src/klotski-window.vala b/src/klotski-window.vala
index e3234d9..ff14df5 100644
--- a/src/klotski-window.vala
+++ b/src/klotski-window.vala
@@ -637,6 +637,8 @@ private class KlotskiWindow : ApplicationWindow
     [GtkCallback]
     private void on_destroy ()
     {
+        settings.delay ();
+
         /* Save game state */
         settings.set_int (KEY_LEVEL, current_level);
 
@@ -644,6 +646,8 @@ private class KlotskiWindow : ApplicationWindow
         settings.set_int ("window-width", window_width);
         settings.set_int ("window-height", window_height);
         settings.set_boolean ("window-is-maximized", window_is_maximized);
+
+        settings.apply ();
     }
 
     /*\