[gnome-games] fullscreen-box: Reveal the titlebar when restoring

[Alexander Mikhaylenko <alexm src gnome org>]

commit d6edb0f440a190fb448c99a33b8b67bc7c01c26d
Author: Adrien Plazas <kekun plazas laposte net>
Date:   Thu Jun 18 09:19:41 2020 +0200

    fullscreen-box: Reveal the titlebar when restoring
    
    Without that, restoring via Ctrl+F when the titlebar is concealed will
    keep it hidden with no other way to bring it back than going back
    fullscreen via Ctrl+F.

 src/ui/fullscreen-box.vala | 4 ++++
 1 file changed, 4 insertions(+)
---
diff --git a/src/ui/fullscreen-box.vala b/src/ui/fullscreen-box.vala
index 41f1b857..d53fdb58 100644
--- a/src/ui/fullscreen-box.vala
+++ b/src/ui/fullscreen-box.vala
@@ -148,6 +148,10 @@ private class Games.FullscreenBox : Gtk.EventBox, Gtk.Buildable {
                        cursor_timeout_id = -1;
                }
 
+               // This is needed when restoring via a keyboard shortcut when the
+               // titlebar is concealed.
+               titlebar_box.reveal_titlebar = true;
+
                on_cursor_moved ();
        }