[rygel] media-export: Fix music browsing on XBox

[Jens Georg <jensgeorg src gnome org>]

commit 0166d09f06706589a2107c8e9cbe1bcd03b8715c
Author: Jens Georg <mail jensge org>
Date:   Fri Oct 21 19:55:57 2011 +0200

    media-export: Fix music browsing on XBox

 .../rygel-media-export-root-container.vala         |    7 ++++++-
 1 files changed, 6 insertions(+), 1 deletions(-)
---
diff --git a/src/plugins/media-export/rygel-media-export-root-container.vala b/src/plugins/media-export/rygel-media-export-root-container.vala
index 8e74541..0b00078 100644
--- a/src/plugins/media-export/rygel-media-export-root-container.vala
+++ b/src/plugins/media-export/rygel-media-export-root-container.vala
@@ -53,6 +53,11 @@ public class Rygel.MediaExport.RootContainer : Rygel.MediaExport.DBContainer {
     internal const string FILESYSTEM_FOLDER_NAME = "Files & Folders";
     internal const string FILESYSTEM_FOLDER_ID   = "Filesystem";
 
+    private const string SEARCH_CONTAINER_PREFIX = QueryContainer.PREFIX +
+                                                   "upnp:class," +
+                                                   MusicItem.UPNP_CLASS +
+                                                   ",";
+
     public static MediaContainer get_instance () throws Error {
         if (RootContainer.instance == null) {
             try {
@@ -239,7 +244,7 @@ public class Rygel.MediaExport.RootContainer : Rygel.MediaExport.DBContainer {
                                        RelationalExpression expression) {
         if (expression.operand1 == "upnp:class" &&
             expression.op == SearchCriteriaOp.EQ) {
-            string id = QueryContainer.PREFIX;
+            string id = SEARCH_CONTAINER_PREFIX;
             switch (expression.operand2) {
                 case "object.container.album.musicAlbum":
                     id += "upnp:album,?";