[gegl] buffer: fixed level bug in reading

[Ãyvind KolÃs <ok src gnome org>]

commit 4a3bfa9897d2c95406413524210a0c734bb608fb
Author: Ville Sokk <ville sokk gmail com>
Date:   Thu Jun 28 21:04:13 2012 +0300

    buffer: fixed level bug in reading

 gegl/buffer/gegl-buffer-access.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/gegl/buffer/gegl-buffer-access.c b/gegl/buffer/gegl-buffer-access.c
index 8565513..cec2437 100644
--- a/gegl/buffer/gegl-buffer-access.c
+++ b/gegl/buffer/gegl-buffer-access.c
@@ -1208,7 +1208,7 @@ gegl_buffer_iterate_read_dispatch (GeglBuffer          *buffer,
   roi_factored.height /= factor;
 
   if (rowstride == GEGL_AUTO_ROWSTRIDE)
-    rowstride = roi->width * babl_format_get_bytes_per_pixel (format);
+    rowstride = roi_factored.width * babl_format_get_bytes_per_pixel (format);
 
   if (gegl_rectangle_contains (&abyss, roi))
     {