[gnome-tetravex] Do not show window at startup.

[Arnaud B. <arnaudb src gnome org>]

commit 9027d4da49a9ab6bc65cac1c7d2cb324b388b381
Author: Arnaud Bonatti <arnaud bonatti gmail com>
Date:   Sat Oct 26 18:19:22 2019 +0200

    Do not show window at startup.

 src/gnome-tetravex.vala | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/src/gnome-tetravex.vala b/src/gnome-tetravex.vala
index fab26ef..d2e2150 100644
--- a/src/gnome-tetravex.vala
+++ b/src/gnome-tetravex.vala
@@ -229,6 +229,7 @@ private class Tetravex : Gtk.Application
         HeaderBar headerbar = new HeaderBar ();
         headerbar.title = PROGRAM_NAME;
         headerbar.show_close_button = true;
+        headerbar.show ();
         window.set_titlebar (headerbar);
 
         Builder menu_builder = new Builder.from_resource ("/org/gnome/Tetravex/app-menu.ui");
@@ -283,6 +284,7 @@ private class Tetravex : Gtk.Application
         view.hexpand = true;
         view.vexpand = true;
         view.can_focus = true;
+        view.show ();
         view.button_release_event.connect (view_button_release_event);
         settings.bind ("theme", view, "theme-id", SettingsBindFlags.GET | SettingsBindFlags.NO_SENSITIVITY);
 
@@ -391,8 +393,6 @@ private class Tetravex : Gtk.Application
                 finish_action.set_enabled (!view.tile_selected);
             });
 
-        window.show_all ();
-
         tick_cb ();
         if (can_restore && restore_on_start)
             new_game (saved_game);