[gnome-photos] dlna-renderer: Fix a value returned

[Debarshi Ray <debarshir src gnome org>]

commit 52a308a1be9f3523e5c51d691557eab8ce4231bf
Author: Yosef Or Boczko <yoseforb gmail com>
Date:   Wed Oct 9 02:52:41 2013 +0300

    dlna-renderer: Fix a value returned
    
    https://bugzilla.gnome.org/show_bug.cgi?id=709693

 src/photos-dlna-renderer.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/photos-dlna-renderer.c b/src/photos-dlna-renderer.c
index a5505f3..22394c9 100644
--- a/src/photos-dlna-renderer.c
+++ b/src/photos-dlna-renderer.c
@@ -733,7 +733,7 @@ photos_dlna_renderer_get_icon_finish (PhotosDlnaRenderer *self,
                                       GAsyncResult       *res,
                                       GError            **error)
 {
-  g_return_if_fail (g_task_is_valid (res, self));
+  g_return_val_if_fail (g_task_is_valid (res, self), NULL);
 
   return GDK_PIXBUF (g_task_propagate_pointer (G_TASK (res), error));
 }