[gnome-photos] done-notification: Fix the property type of "item"

[Debarshi Ray <debarshir src gnome org>]

commit ce6a431a9055e88de435fb2dcde3449044736838
Author: Debarshi Ray <debarshir gnome org>
Date:   Tue Oct 24 19:36:57 2017 +0200

    done-notification: Fix the property type of "item"
    
    Fallout from 0e9b118c793b99c20008d82f814e1a19bf7bcfd7

 src/photos-done-notification.c |   16 +++++++---------
 1 files changed, 7 insertions(+), 9 deletions(-)
---
diff --git a/src/photos-done-notification.c b/src/photos-done-notification.c
index f2bcf50..257afe8 100644
--- a/src/photos-done-notification.c
+++ b/src/photos-done-notification.c
@@ -181,11 +181,8 @@ photos_done_notification_set_property (GObject *object, guint prop_id, const GVa
   switch (prop_id)
     {
       case PROP_ITEM:
-        {
-          PhotosBaseItem *item = (PhotosBaseItem *) g_value_get_pointer (value);
-          self->item = g_object_ref (item);
-          break;
-        }
+        self->item = PHOTOS_BASE_ITEM (g_value_dup_object (value));
+        break;
 
       default:
         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
@@ -217,10 +214,11 @@ photos_done_notification_class_init (PhotosDoneNotificationClass *class)
 
   g_object_class_install_property (object_class,
                                    PROP_ITEM,
-                                   g_param_spec_pointer ("item",
-                                                         "PhotosBaseItem instance",
-                                                         "The edited PhotosBaseItem",
-                                                         G_PARAM_CONSTRUCT_ONLY | G_PARAM_WRITABLE));
+                                   g_param_spec_object ("item",
+                                                        "PhotosBaseItem instance",
+                                                        "The edited PhotosBaseItem",
+                                                        PHOTOS_TYPE_BASE_ITEM,
+                                                        G_PARAM_CONSTRUCT_ONLY | G_PARAM_WRITABLE));
 }