[rygel] core: Empty SortCriteria means no SortCriteria

[Zeeshan Ali Khattak <zeeshanak src gnome org>]

commit f5c9cc5f8f3bf23047224451e50d4431c86ac292
Author: Zeeshan Ali (Khattak) <zeeshanak gnome org>
Date:   Wed Dec 15 20:00:02 2010 +0200

    core: Empty SortCriteria means no SortCriteria

 src/rygel/rygel-media-query-action.vala |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/rygel/rygel-media-query-action.vala b/src/rygel/rygel-media-query-action.vala
index 34f42af..0151e99 100644
--- a/src/rygel/rygel-media-query-action.vala
+++ b/src/rygel/rygel-media-query-action.vala
@@ -117,7 +117,7 @@ internal abstract class Rygel.MediaQueryAction : GLib.Object, StateMachine {
                                         (_("No such object"));
         }
 
-        if (this.sort_criteria == null) {
+        if (this.sort_criteria == null || this.sort_criteria == "") {
             this.sort_criteria = DEFAULT_SORT_CRITERIA;
         }