[gegl] fix embarrassing bug in tests... Doh!

[Simon Budig <simon src gnome org>]

commit 498d3cd76222053c54a5c24f8b7729958e33dc11
Author: Simon Budig <simon budig de>
Date:   Tue May 22 02:13:07 2012 +0200

    fix embarrassing bug in tests... Doh!

 tests/buffer/tests/test_gegl_buffer_linear_iter.c |    2 +-
 tests/buffer/tests/test_gegl_buffer_multcopy.c    |    2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/tests/buffer/tests/test_gegl_buffer_linear_iter.c b/tests/buffer/tests/test_gegl_buffer_linear_iter.c
index e32181b..e90419d 100644
--- a/tests/buffer/tests/test_gegl_buffer_linear_iter.c
+++ b/tests/buffer/tests/test_gegl_buffer_linear_iter.c
@@ -34,7 +34,7 @@ TEST ()
       gint length = iter->length;
 
       while (length--)
-        *d = *s;
+        *d++ = *s++;
     }
 
   print_buffer (buffer);
diff --git a/tests/buffer/tests/test_gegl_buffer_multcopy.c b/tests/buffer/tests/test_gegl_buffer_multcopy.c
index 900eef1..5d8e65e 100644
--- a/tests/buffer/tests/test_gegl_buffer_multcopy.c
+++ b/tests/buffer/tests/test_gegl_buffer_multcopy.c
@@ -39,7 +39,7 @@ TEST ()
               gint length = iter->length;
 
               while (length--)
-                *d = *s;
+                *d++ = *s++;
             }
 
           g_object_unref (buffer2);