[gnome-music/wip/mschraal/fix-artists-query] query: Replace incorrect artists order statement

[Marinus Schraal <mschraal src gnome org>]

commit c828eef85ca70c52ca1a36eedec84d5c77482c48
Author: Marinus Schraal <mschraal gnome org>
Date:   Thu Nov 15 00:25:52 2018 +0100

    query: Replace incorrect artists order statement
    
    The artists query contained an obsolete ?album_collation statement, that
    was mistakenly not replaced in an earlier cleanup. It triggered an error
    with a recent Tracker release.
    Replace it with the updated ordering statement as originally intended.

 gnomemusic/query.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/gnomemusic/query.py b/gnomemusic/query.py
index b8223bc8..ac7707f8 100644
--- a/gnomemusic/query.py
+++ b/gnomemusic/query.py
@@ -174,7 +174,7 @@ class Query():
         FILTER(STRSTARTS(nie:url(?song), '%(music_dir)s/'))
     }
     GROUP BY ?album
-    ORDER BY (%(artist_sort)s) ?creation_date ?album_collation
+    ORDER BY %(artist_sort)s ?creation_date %(album_order)s
     """.replace('\n', ' ').strip() % {
             'where_clause': where_clause.replace('\n', ' ').strip(),
             'music_dir': Query.MUSIC_URI,