[gnome-music/wip/jfelder/mpris-cleanup: 24/28] mpris: Make player_toolbar attribute internal

[Jean Felder <jfelder src gnome org>]

commit 9a9524dd3bf70662952fd28b70ea58b41a6f19e9
Author: Jean Felder <jfelder src gnome org>
Date:   Thu Mar 14 11:08:38 2019 +0100

    mpris: Make player_toolbar attribute internal

 gnomemusic/mpris.py | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)
---
diff --git a/gnomemusic/mpris.py b/gnomemusic/mpris.py
index e68ae4c5..46beb8b7 100644
--- a/gnomemusic/mpris.py
+++ b/gnomemusic/mpris.py
@@ -290,9 +290,10 @@ class MPRIS(DBusInterface):
         self._player.connect(
             'playlist-changed', self._on_player_playlist_changed)
 
-        self.player_toolbar = app.get_active_window()._player_toolbar
-        self.player_toolbar.connect(
+        self._player_toolbar = app.get_active_window()._player_toolbar
+        self._player_toolbar.connect(
             'thumbnail-updated', self._on_thumbnail_updated)
+
         playlists = Playlists.get_default()
         playlists.connect('playlist-created', self._on_playlists_count_changed)
         playlists.connect('playlist-deleted', self._on_playlists_count_changed)