[gegl] gegl_buffer_get: Sanity check scale parameter

[Daniel Sabo <daniels src gnome org>]

commit f123c80145dd6223315d33d68cab25ee0becff74
Author: Daniel Sabo <DanielSabo gmail com>
Date:   Sat Jan 12 18:25:11 2013 -0800

    gegl_buffer_get: Sanity check scale parameter

 gegl/buffer/gegl-buffer-access.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/gegl/buffer/gegl-buffer-access.c b/gegl/buffer/gegl-buffer-access.c
index 6aa7e09..e6ec2a0 100644
--- a/gegl/buffer/gegl-buffer-access.c
+++ b/gegl/buffer/gegl-buffer-access.c
@@ -1623,6 +1623,7 @@ gegl_buffer_get_unlocked (GeglBuffer          *buffer,
                           gint                 rowstride,
                           GeglAbyssPolicy      repeat_mode)
 {
+  g_return_if_fail (scale > 0.0);
 
   if (format == NULL)
     format = buffer->soft_format;