[gnome-mines/arnaudb/wip/gtk4: 22/36] Adapt to MenuButton API.

[Arnaud B. <arnaudb src gnome org>]

commit ce4d34f3c899205e733c88515d00a530c3f6baed
Author: Arnaud Bonatti <arnaud bonatti gmail com>
Date:   Mon Apr 13 23:41:31 2020 +0200

    Adapt to MenuButton API.

 src/gnome-mines.vala | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/src/gnome-mines.vala b/src/gnome-mines.vala
index 21856fd..b7883e2 100644
--- a/src/gnome-mines.vala
+++ b/src/gnome-mines.vala
@@ -240,7 +240,7 @@ public class Mines : Gtk.Application
             section.append (_("_Help"), "app.help");
             section.append (_("_About Mines"), "app.about");
             var menu_button = new MenuButton ();
-            menu_button.set_image (new Image.from_icon_name ("open-menu-symbolic", IconSize.BUTTON));
+            menu_button.set_icon_name ("open-menu-symbolic");
             menu_button.set_menu_model (menu);
             headerbar.pack_end (menu_button);
         }