[rygel] tracker: Ignore empty metadata values

[Zeeshan Ali Khattak <zeeshanak src gnome org>]

commit ffbb07b399f47e4d5f5ccc649cf93369497c5307
Author: Zeeshan Ali (Khattak) <zeeshanak gnome org>
Date:   Sun Sep 20 23:45:01 2009 +0300

    tracker: Ignore empty metadata values

 .../tracker/rygel-tracker-metadata-values.vala     |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)
---
diff --git a/src/plugins/tracker/rygel-tracker-metadata-values.vala b/src/plugins/tracker/rygel-tracker-metadata-values.vala
index 3661a89..f04f95b 100644
--- a/src/plugins/tracker/rygel-tracker-metadata-values.vala
+++ b/src/plugins/tracker/rygel-tracker-metadata-values.vala
@@ -90,6 +90,10 @@ public class Rygel.TrackerMetadataValues : Rygel.SimpleContainer {
         for (uint i = 0; i < search_result.length; i++) {
             string value = search_result[i][0];
 
+            if (value == "") {
+                continue;
+            }
+
             var query_condition = QUERY_CONDITION.printf (
                                         this.key,
                                         Markup.escape_text (value));