[gegl] color-enhance: update reference hash

[Øyvind Kolås <ok src gnome org>]

commit c2c7de2be0f3f54f5effecb51e849e7317188d02
Author: Øyvind Kolås <pippin gimp org>
Date:   Thu Oct 12 21:04:40 2017 +0200

    color-enhance: update reference hash

 operations/common/color-enhance.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/operations/common/color-enhance.c b/operations/common/color-enhance.c
index 92f22ae..7be914e 100644
--- a/operations/common/color-enhance.c
+++ b/operations/common/color-enhance.c
@@ -272,7 +272,7 @@ gegl_op_class_init (GeglOpClass *klass)
     "name",        "gegl:color-enhance",
     "title",       _("Color Enhance"),
     "categories" , "color:enhance",
-    "reference-hash", "f8f470769afc06b08bcef46c2f44c406",
+    "reference-hash", "7d2196daa0ffdaa64db34efc4166e793",
     "description",
         _("Stretch color chroma to cover maximum possible range, "
           "keeping hue and lightness untouched."),