[rygel] Fix the build.

[Murray Cumming <murrayc src gnome org>]

commit 236a075dbe8391babedceb6a529b2916a8a86e0c
Author: Murray Cumming <murrayc murrayc com>
Date:   Fri Jan 18 11:04:06 2013 +0100

    Fix the build.

 .../rygel-media-export-root-container.vala         |    3 +--
 1 files changed, 1 insertions(+), 2 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 06ff4fa..2cbe581 100644
--- a/src/plugins/media-export/rygel-media-export-root-container.vala
+++ b/src/plugins/media-export/rygel-media-export-root-container.vala
@@ -124,8 +124,7 @@ public class Rygel.MediaExport.RootContainer : TrackableDbContainer {
 
             var factory = QueryContainerFactory.get_default ();
             var container_id = QueryContainer.PREFIX + parts[0];
-            var container = factory.create_from_id (this.media_db,
-                                                    container_id);
+            var container = factory.create_from_id (container_id);
             if (container == null) {
                 return null;
             }