[gnome-music/wip/mschraal/gtk4: 85/90] playlistsview: Adapt to Container removal

[Marinus Schraal <mschraal src gnome org>]

commit e7932374af2b7b4ba1c240128976780f5a184ba8
Author: Marinus Schraal <mschraal gnome org>
Date:   Tue Jun 9 01:26:46 2020 +0200

    playlistsview: Adapt to Container removal

 gnomemusic/views/playlistsview.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/gnomemusic/views/playlistsview.py b/gnomemusic/views/playlistsview.py
index 21247067..2cd468ec 100644
--- a/gnomemusic/views/playlistsview.py
+++ b/gnomemusic/views/playlistsview.py
@@ -59,7 +59,7 @@ class PlaylistsView(Gtk.Box):
         self._untouched_list = True
 
         self._playlist_widget = PlaylistsWidget(application, self)
-        self.add(self._playlist_widget)
+        self.append(self._playlist_widget)
 
         self._sidebar.bind_model(self._model, self._add_playlist_to_sidebar)