[rygel] core: Early exit on missing thumbnail

[Jens Georg <jensgeorg src gnome org>]

commit 3c691be0968186468d45abeaf99a43f9f737dd84
Author: Jens Georg <mail jensge org>
Date:   Mon Jul 9 13:33:51 2012 +0200

    core: Early exit on missing thumbnail
    
    If we need to ask tumbler for a thumbnail, we can just exit. There's no
    need to do the filesystem call afterwards. It will fail anyway.

 src/librygel-core/rygel-thumbnailer.vala |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/src/librygel-core/rygel-thumbnailer.vala b/src/librygel-core/rygel-thumbnailer.vala
index 35d5545..db6ea20 100644
--- a/src/librygel-core/rygel-thumbnailer.vala
+++ b/src/librygel-core/rygel-thumbnailer.vala
@@ -107,6 +107,9 @@ internal class Rygel.Thumbnailer : GLib.Object {
         // send a request to create thumbnail if it does not exist
         if ((this.thumbler != null) && (!file.query_exists ())) {
             this.thumbler.queue_thumbnail_task (uri, mime_type);
+
+            throw new ThumbnailerError.NO_THUMBNAIL
+                                        (_("No thumbnail available"));
         }
 
         var info = file.query_info (FileAttribute.ACCESS_CAN_READ + "," +