[gthumb] fixed error when getting the modified image

[Paolo Bacchilega <paobac src gnome org>]

commit cb67c660ec7cacfafeb5a9f7ed6e277ee0654554
Author: Paolo Bacchilega <paobac src gnome org>
Date:   Sat Sep 21 12:47:06 2013 +0200

    fixed error when getting the modified image
    
    return a GthImage instead of a cairo_surface_t

 extensions/image_viewer/gth-image-viewer-page.c |    8 ++++----
 1 files changed, 4 insertions(+), 4 deletions(-)
---
diff --git a/extensions/image_viewer/gth-image-viewer-page.c b/extensions/image_viewer/gth-image-viewer-page.c
index ebc7a67..b9e73a9 100644
--- a/extensions/image_viewer/gth-image-viewer-page.c
+++ b/extensions/image_viewer/gth-image-viewer-page.c
@@ -1761,12 +1761,12 @@ gth_image_viewer_page_get_original (GthImageViewerPage   *self,
        data->cancellable = (cancellable != NULL) ? g_object_ref (cancellable) : g_cancellable_new ();
 
        if (self->priv->image_changed) {
-               cairo_surface_t *image;
+               GthImage *image;
 
-               image = gth_image_viewer_page_get_image (self);
+               image = gth_image_new_for_surface (gth_image_viewer_page_get_image (self));
                g_simple_async_result_set_op_res_gpointer (data->result,
-                                                          cairo_surface_reference (image),
-                                                          (GDestroyNotify) cairo_surface_destroy);
+                                                          image,
+                                                          (GDestroyNotify) g_object_unref);
                g_simple_async_result_complete_in_idle (data->result);
 
                return;