[gnome-music/wip/mschraal/albumartists-cleanup] artistalbumwidget: Mark create_disc_box private

[Marinus Schraal <mschraal src gnome org>]

commit ff0310a6eb40fc36fc2584653c08740f5dda3773
Author: Marinus Schraal <mschraal gnome org>
Date:   Sun Jun 17 18:14:07 2018 +0200

    artistalbumwidget: Mark create_disc_box private

 gnomemusic/widgets/artistalbumwidget.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/gnomemusic/widgets/artistalbumwidget.py b/gnomemusic/widgets/artistalbumwidget.py
index 11131faf..6fcc49a2 100644
--- a/gnomemusic/widgets/artistalbumwidget.py
+++ b/gnomemusic/widgets/artistalbumwidget.py
@@ -103,7 +103,7 @@ class ArtistAlbumWidget(Gtk.Box):
 
         grilo.populate_album_songs(self._media, self._add_item)
 
-    def create_disc_box(self, disc_nr, disc_songs):
+    def _create_disc_box(self, disc_nr, disc_songs):
         disc_box = DiscBox(self._model)
         disc_box.set_songs(disc_songs)
         disc_box.set_disc_number(disc_nr)
@@ -137,7 +137,7 @@ class ArtistAlbumWidget(Gtk.Box):
                 discs[disc_nr].append(song)
 
         for disc_nr in discs:
-            disc = self.create_disc_box(disc_nr, discs[disc_nr])
+            disc = self._create_disc_box(disc_nr, discs[disc_nr])
             self._disc_list_box.add(disc)
             if len(discs) == 1:
                 disc.props.show_disc_label = False