[grilo] pls: Support older versions of totem-pl-parser

[Bastien Nocera <hadess src gnome org>]

commit 00f1f93eeabf89fd94014061060b77d700cfe84f
Author: Bastien Nocera <hadess hadess net>
Date:   Tue Feb 17 13:39:12 2015 +0100

    pls: Support older versions of totem-pl-parser
    
    But no need to recompile grilo to support newer versions.

 libs/pls/grl-pls.c |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)
---
diff --git a/libs/pls/grl-pls.c b/libs/pls/grl-pls.c
index 0695457..f03c4ac 100644
--- a/libs/pls/grl-pls.c
+++ b/libs/pls/grl-pls.c
@@ -550,6 +550,11 @@ grl_media_new_from_pls_entry (const gchar *uri,
   mimetype = g_hash_table_lookup (metadata, TOTEM_PL_PARSER_FIELD_CONTENT_TYPE);
   if (mimetype)
     grl_media_set_mime (media, mimetype);
+
+/* For older totem-pl-parser versions */
+#ifndef TOTEM_PL_PARSER_FIELD_AUDIO_TRACK
+#define TOTEM_PL_PARSER_FIELD_AUDIO_TRACK "audio-track"
+#endif
   audio_track = g_hash_table_lookup (metadata, TOTEM_PL_PARSER_FIELD_AUDIO_TRACK);
   if (audio_track)
     grl_data_set_int (GRL_DATA (media), GRL_METADATA_KEY_AUDIO_TRACK, atoi (audio_track));