[gthumb] simplified a function call

[Paolo Bacchilega <paobac src gnome org>]

commit 53fb9706781c22c3d7bf7cc95a7a9e1850577d71
Author: Paolo Bacchilega <paobac src gnome org>
Date:   Sat Sep 21 16:50:07 2013 +0200

    simplified a function call

 extensions/resize_images/dlg-resize-images.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/extensions/resize_images/dlg-resize-images.c b/extensions/resize_images/dlg-resize-images.c
index 8791e35..e04ef94 100644
--- a/extensions/resize_images/dlg-resize-images.c
+++ b/extensions/resize_images/dlg-resize-images.c
@@ -96,7 +96,7 @@ exec_resize (GthAsyncTask *task,
        int              max_w, max_h;
        GthImage        *destination_image;
 
-       source = gth_image_get_cairo_surface (gth_image_task_get_source (GTH_IMAGE_TASK (task)));
+       source = gth_image_task_get_source_surface (GTH_IMAGE_TASK (task));
        w = cairo_image_surface_get_width (source);
        h = cairo_image_surface_get_height (source);