[gnome-photos] base-item: Fix typo

[Debarshi Ray <debarshir src gnome org>]

commit 6c24d23ed1c8482ac59eb99f224fff347309e19d
Author: Debarshi Ray <debarshir gnome org>
Date:   Thu Sep 5 16:18:32 2013 +0200

    base-item: Fix typo

 src/photos-base-item.c |    6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)
---
diff --git a/src/photos-base-item.c b/src/photos-base-item.c
index bc7311e..25a3bc1 100644
--- a/src/photos-base-item.c
+++ b/src/photos-base-item.c
@@ -259,9 +259,9 @@ photos_base_item_create_thumbnail_finish (PhotosBaseItem *self, GAsyncResult *re
 {
   GTask *task = G_TASK (res);
 
-  g_return_val_if_fail (g_task_is_valid (res, self), NULL);
-  g_return_val_if_fail (g_task_get_source_tag (task) == photos_base_item_create_thumbnail_async, NULL);
-  g_return_val_if_fail (error == NULL || *error == NULL, NULL);
+  g_return_val_if_fail (g_task_is_valid (res, self), FALSE);
+  g_return_val_if_fail (g_task_get_source_tag (task) == photos_base_item_create_thumbnail_async, FALSE);
+  g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
 
   return g_task_propagate_boolean (task, error);
 }