[gnome-music/wip/mschraal/gtk4-v2: 57/60] corealbum: Fix _disc_order_sort

[Marinus Schraal <mschraal src gnome org>]

commit 571b64554ad5340cc512c3221a799673e743309e
Author: Marinus Schraal <mschraal gnome org>
Date:   Sun Apr 25 16:01:08 2021 +0200

    corealbum: Fix _disc_order_sort

 gnomemusic/corealbum.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/gnomemusic/corealbum.py b/gnomemusic/corealbum.py
index 9d580578f..f89f7a934 100644
--- a/gnomemusic/corealbum.py
+++ b/gnomemusic/corealbum.py
@@ -79,7 +79,7 @@ class CoreAlbum(GObject.GObject):
         disc_model = Gio.ListStore()
         disc_model_sort = Gtk.SortListModel.new(disc_model)
 
-        def _disc_order_sort(disc_a, disc_b):
+        def _disc_order_sort(disc_a, disc_b, data=None):
             return disc_a.props.disc_nr - disc_b.props.disc_nr
 
         disc_sorter = Gtk.CustomSorter()