[gegl] illusion: opt out of multithreading

[Thomas Manni <tmanni src gnome org>]

commit cfabbd6dfd0c6b0c5f84d99a75ba5a717f6ab584
Author: Thomas Manni <thomas manni free fr>
Date:   Wed Jun 24 19:54:56 2015 +0200

    illusion: opt out of multithreading

 operations/common/illusion.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/operations/common/illusion.c b/operations/common/illusion.c
index bccff6a..9adcbdf 100644
--- a/operations/common/illusion.c
+++ b/operations/common/illusion.c
@@ -237,6 +237,7 @@ gegl_op_class_init (GeglOpClass *klass)
   operation_class->get_required_for_output = get_required_for_output;
   operation_class->get_cached_region       = get_cached_region;
   operation_class->opencl_support          = FALSE;
+  operation_class->threaded                = FALSE;
 
   gegl_operation_class_set_keys (operation_class,
       "name",        "gegl:illusion",