[gnome-music/wip/jfelder/tracker3] grltrackerplaylists: Fix playlists query

[Marinus Schraal <mschraal src gnome org>]

commit 573e13bedd3c498a2b4308da082653331ee13f44
Author: Marinus Schraal <mschraal gnome org>
Date:   Mon Aug 24 14:31:50 2020 +0200

    grltrackerplaylists: Fix playlists query
    
    User created playlists did not show up. Add ?url in the inner
    select query to make it available for filtering.

 gnomemusic/grilowrappers/grltrackerplaylists.py | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/gnomemusic/grilowrappers/grltrackerplaylists.py b/gnomemusic/grilowrappers/grltrackerplaylists.py
index 7331a9ea..5f9bff32 100644
--- a/gnomemusic/grilowrappers/grltrackerplaylists.py
+++ b/gnomemusic/grilowrappers/grltrackerplaylists.py
@@ -375,6 +375,7 @@ class Playlist(GObject.GObject):
                         nmm:artistName(nmm:artist(?song)) AS ?artist
                         nie:title(nmm:musicAlbum(?song)) AS ?album
                         nfo:duration(?song) AS ?duration
+                        ?url
                     WHERE {
                         ?song a nmm:MusicPiece ;
                               nie:isStoredAs ?url .