[rygel] media-export: Fix missing title in virtual containers

[Jens Georg <jensgeorg src gnome org>]

commit f50cb9a267f662d2e29d96caffa57794e09b3bc3
Author: Jens Georg <mail jensge org>
Date:   Wed Jul 29 23:43:03 2020 +0200

    media-export: Fix missing title in virtual containers
    
    The name was not set for virtual objects if created from hash cache.
    This usually would only affect BrowseMetadata as BrowseChildren are
    constructed differently
    
    Fixes #169

 .../media-export/rygel-media-export-query-container-factory.vala       | 3 +++
 1 file changed, 3 insertions(+)
---
diff --git a/src/plugins/media-export/rygel-media-export-query-container-factory.vala 
b/src/plugins/media-export/rygel-media-export-query-container-factory.vala
index dd81e1e3..24bd6125 100644
--- a/src/plugins/media-export/rygel-media-export-query-container-factory.vala
+++ b/src/plugins/media-export/rygel-media-export-query-container-factory.vala
@@ -216,6 +216,9 @@ internal class Rygel.MediaExport.QueryContainerFactory : Object {
                 if (i + 2 == args.length) {
                     upnp_class = QueryContainerFactory.map_upnp_class
                                         (attribute);
+                    if (name == "") {
+                        name = Uri.unescape_string (args[i + 1]);
+                    }
                 }
             } else {
                 args[i + 1] = "%s";