[gegl] mantiuk06: update reference hash

[Øyvind Kolås <ok src gnome org>]

commit 7c777cf01a55dcd53b9a75b73091f8756da5d7ef
Author: Øyvind Kolås <pippin gimp org>
Date:   Thu Oct 12 21:05:55 2017 +0200

    mantiuk06: update reference hash

 operations/common/mantiuk06.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/operations/common/mantiuk06.c b/operations/common/mantiuk06.c
index b98601e..4fd171f 100644
--- a/operations/common/mantiuk06.c
+++ b/operations/common/mantiuk06.c
@@ -1638,7 +1638,7 @@ gegl_op_class_init (GeglOpClass *klass)
       "name",        "gegl:mantiuk06",
       "title",       _("Mantiuk 2006 Tone Mapping"),
       "categories" , "tonemapping",
-      "reference-hash", "cd4aecc6eeb94085424c7adb6d43e92a",
+      "reference-hash", "7e975743d65c03c806003f60d5d8fe71",
       "description",
         _("Adapt an image, which may have a high dynamic range, for "
           "presentation using a low dynamic range. This operator constrains "