[gnome-tetravex/arnaudb/wip/gtk4: 30/49] Adapt to MenuButton API.

[Arnaud B. <arnaudb src gnome org>]

commit 5919c6b5eee772cb69076773f765fb4ab47df03a
Author: Arnaud Bonatti <arnaud bonatti gmail com>
Date:   Fri Feb 21 04:24:11 2020 +0100

    Adapt to MenuButton API.
    
    TODO fix.

 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 9ce271e..71ef565 100644
--- a/src/gnome-tetravex.vala
+++ b/src/gnome-tetravex.vala
@@ -329,7 +329,7 @@ private class Tetravex : Gtk.Application
         Builder menu_builder = new Builder.from_resource ("/org/gnome/Tetravex/app-menu.ui");
         MenuModel appmenu = (MenuModel) menu_builder.get_object ("app-menu");
         hamburger_button = new MenuButton ();
-        hamburger_button.set_image (new Image.from_icon_name ("open-menu-symbolic", IconSize.BUTTON));
+        hamburger_button.set_icon_name ("open-menu-symbolic");
         ((Widget) hamburger_button).set_focus_on_click (false);
         hamburger_button.valign = Align.CENTER;
         hamburger_button.show ();
@@ -1004,7 +1004,7 @@ private class Tetravex : Gtk.Application
 
     private void hamburger_cb ()
     {
-        hamburger_button.active = !hamburger_button.active;
+//        hamburger_button.active = !hamburger_button.active;
     }
 
     private void help_cb ()