[gegl] value-invert: update reference hash

[Øyvind Kolås <ok src gnome org>]

commit a58080d90800c8e5807d63a0e0da09e44b2baa66
Author: Øyvind Kolås <pippin gimp org>
Date:   Sat Nov 11 21:34:53 2017 +0100

    value-invert: update reference hash

 operations/common/value-invert.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/operations/common/value-invert.c b/operations/common/value-invert.c
index 5c367e9..3efe894 100644
--- a/operations/common/value-invert.c
+++ b/operations/common/value-invert.c
@@ -147,7 +147,7 @@ gegl_op_class_init (GeglOpClass *klass)
     "name",        "gegl:value-invert",
     "title",       _("Value Invert"),
     "categories" , "color",
-    "reference-hash", "489d46de415cb7308b59014449ff76af",
+    "reference-hash", "19c7f1a09ed4c2a904f17bdc19e071de",
     "description",
         _("Invert the value component, the result has the brightness "
           "inverted, keeping the color."),