[rygel] tracker3: Add missing storage clause to New container

[Jens Georg <jensgeorg src gnome org>]

commit 7e744c079d89f4b2aaf569377a284612b96927c2
Author: Jens Georg <mail jensge org>
Date:   Sun Jun 7 11:27:08 2020 +0200

    tracker3: Add missing storage clause to New container

 src/plugins/tracker3/rygel-tracker-metadata-multivalues.vala | 3 +++
 1 file changed, 3 insertions(+)
---
diff --git a/src/plugins/tracker3/rygel-tracker-metadata-multivalues.vala 
b/src/plugins/tracker3/rygel-tracker-metadata-multivalues.vala
index 0298c755..10934e03 100644
--- a/src/plugins/tracker3/rygel-tracker-metadata-multivalues.vala
+++ b/src/plugins/tracker3/rygel-tracker-metadata-multivalues.vala
@@ -53,6 +53,9 @@ public abstract class Rygel.Tracker.MetadataMultiValues : MetadataContainer {
         this.triplets.add (new QueryTriplet (SelectionQuery.ITEM_VARIABLE,
                                              "a",
                                              this.item_factory.category));
+        this.triplets.add (new QueryTriplet (SelectionQuery.ITEM_VARIABLE,
+                                             "nie:isStoredAs",
+                                             SelectionQuery.STORAGE_VARIABLE));
 
         // All variables used in the query
         var num_keys = this.key_chain.length - 1;