fix filling album information

some songs have Artist, some have AlbumArtist. mpd-feeder prefers the
later, but takes the former too

diff --git a/bin/mpd-feeder b/bin/mpd-feeder
index d553ea3e1d885980f1d851a11da7a45d4688112f..42e3f7bb4516f55e8259ed36a001a89c17bb349a 100755 (executable)
--- a/bin/mpd-feeder
+++ b/bin/mpd-feeder
@@ -299,7 +299,8 @@ SQL
             foreach my $entry (@$rows) {
                 next unless exists $entry->{file};
                 $self->db_store_song( $entry->{file},
-                    $entry->{AlbumArtist}, $entry->{Album} );
+                    $entry->{AlbumArtist} // $entry->{Artist},
+                    $entry->{Album} );
                 $song_count++;
             }