[gnome-music/wip/jfelder/playlistdialog-listbox] playlistdialog: Update copyright header

[Jean Felder <jfelder src gnome org>]

commit 399043d12c3c5bb357c5ef7b178500b743c308cb
Author: Jean Felder <jfelder src gnome org>
Date:   Tue May 28 17:10:04 2019 +0200

    playlistdialog: Update copyright header

 gnomemusic/widgets/playlistdialog.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/gnomemusic/widgets/playlistdialog.py b/gnomemusic/widgets/playlistdialog.py
index 46442120..fc9ab023 100644
--- a/gnomemusic/widgets/playlistdialog.py
+++ b/gnomemusic/widgets/playlistdialog.py
@@ -1,4 +1,4 @@
-# Copyright (c) 2016 The GNOME Music Developers
+# Copyright 2019 The GNOME Music Developers
 #
 # GNOME Music is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by