[grilo: 2/4] grilo: Add vala bindings for Key ALBUM_DISC_NUMBER

[Victor Toso <victortoso src gnome org>]

commit 972ca2c12d434a71d3a6eeb97604e9fdace3b5e4
Author: 1PunMan <saurabhsingh412 gmail com>
Date:   Mon May 28 14:01:42 2018 +0530

    grilo: Add vala bindings for Key ALBUM_DISC_NUMBER
    
    Currently Grilo returns an error when the Key ALBUM_DISC_NUMBER
    is used, this commit adds the binding to allow the key to
    function properly.
    
    https://gitlab.gnome.org/GNOME/grilo/issues/2

 bindings/vala/grilo-0.3-custom.vala | 2 ++
 1 file changed, 2 insertions(+)
---
diff --git a/bindings/vala/grilo-0.3-custom.vala b/bindings/vala/grilo-0.3-custom.vala
index d95b733..b68273a 100644
--- a/bindings/vala/grilo-0.3-custom.vala
+++ b/bindings/vala/grilo-0.3-custom.vala
@@ -111,6 +111,8 @@ namespace Grl {
                public static Grl.KeyID MB_RECORDING_ID;
                [CCode (cname ="GRL_METADATA_KEY_AUDIO_TRACK")]
                public static Grl.KeyID AUDIO_TRACK;
+               [CCode (cname ="GRL_METADATA_KEY_ALBUM_DISC_NUMBER")]
+               public static Grl.KeyID ALBUM_DISC_NUMBER;
                [CCode (cname ="GRL_METADATA_KEY_ALBUM_ARTIST")]
                public static Grl.KeyID ALBUM_ARTIST;