[gnome-sudoku/arnaudb/event-controller-key] Delay setting settings.

[Arnaud B. <arnaudb src gnome org>]

commit 4be633f699c9d97fc92cee06fab4333e13e41688
Author: Arnaud Bonatti <arnaud bonatti gmail com>
Date:   Sun Apr 12 13:14:07 2020 +0200

    Delay setting settings.

 src/gnome-sudoku.vala | 2 ++
 1 file changed, 2 insertions(+)
---
diff --git a/src/gnome-sudoku.vala b/src/gnome-sudoku.vala
index 979edb0..9fd5ea4 100644
--- a/src/gnome-sudoku.vala
+++ b/src/gnome-sudoku.vala
@@ -222,9 +222,11 @@ public class Sudoku : Gtk.Application
         }
 
         /* Save window state */
+        settings.delay ();
         settings.set_int ("window-width", window_width);
         settings.set_int ("window-height", window_height);
         settings.set_boolean ("window-is-maximized", is_maximized);
+        settings.apply ();
 
         base.shutdown ();
     }