[gnome-photos] Fix and clean-up reference counting

[Debarshi Ray <debarshir src gnome org>]

commit fa27aa56111b6ab58720d787795fc1dc06c76a7f
Author: Debarshi Ray <debarshir gnome org>
Date:   Sun Mar 24 16:26:05 2013 +0100

    Fix and clean-up reference counting

 src/photos-embed.c        |    8 ++++++--
 src/photos-preview-view.c |    4 +++-
 2 files changed, 9 insertions(+), 3 deletions(-)
---
diff --git a/src/photos-embed.c b/src/photos-embed.c
index 8a9e817..2a1857f 100644
--- a/src/photos-embed.c
+++ b/src/photos-embed.c
@@ -89,7 +89,7 @@ photos_embed_item_load (GObject *source_object, GAsyncResult *res, gpointer user
   g_clear_object (&priv->loader_cancellable);
   node = photos_base_item_load_finish (item, res, NULL);
   if (node == NULL)
-    return;
+    goto out;
 
   photos_preview_view_set_node (PHOTOS_PREVIEW_VIEW (priv->preview), node);
 
@@ -97,6 +97,10 @@ photos_embed_item_load (GObject *source_object, GAsyncResult *res, gpointer user
 
   photos_mode_controller_set_window_mode (priv->mode_cntrlr, PHOTOS_WINDOW_MODE_PREVIEW);
   photos_mode_controller_set_can_fullscreen (priv->mode_cntrlr, TRUE);
+
+ out:
+  g_clear_object (&node);
+  g_object_unref (self);
 }
 
 
@@ -118,7 +122,7 @@ photos_embed_active_changed (PhotosBaseManager *manager, GObject *object, gpoint
   photos_base_item_load_async (PHOTOS_BASE_ITEM (object),
                                priv->loader_cancellable,
                                photos_embed_item_load,
-                               self);
+                               g_object_ref (self));
 }
 
 
diff --git a/src/photos-preview-view.c b/src/photos-preview-view.c
index bc15a57..8c7815b 100644
--- a/src/photos-preview-view.c
+++ b/src/photos-preview-view.c
@@ -206,5 +206,7 @@ photos_preview_view_set_node (PhotosPreviewView *self, GeglNode *node)
 
   priv->node = g_object_ref (node);
   photos_preview_view_scale_and_align_image (self);
-  gegl_gtk_view_set_node (GEGL_GTK_VIEW (priv->view), priv->node);
+
+  /* Steals the reference to the GeglNode. */
+  gegl_gtk_view_set_node (GEGL_GTK_VIEW (priv->view), g_object_ref (priv->node));
 }