[gegl] invert-gamma: update reference hash

[Øyvind "pippin" Kolås <ok src gnome org>]

commit cdbdd9426a5ce2ab7e79dd9fefafcbe33339f295
Author: Øyvind Kolås <pippin gimp org>
Date:   Tue Sep 4 20:56:04 2018 +0200

    invert-gamma: update reference hash

 operations/common/invert-gamma.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/operations/common/invert-gamma.c b/operations/common/invert-gamma.c
index 98a5d0128..a0b6e14c3 100644
--- a/operations/common/invert-gamma.c
+++ b/operations/common/invert-gamma.c
@@ -80,7 +80,7 @@ gegl_op_class_init (GeglOpClass *klass)
     "name"       , "gegl:invert-gamma",
     "title",      _("Invert in Perceptual space"),
     "categories" , "color",
-    "reference-hash", "f602d2a04555e341aa6efe755f1d5999",
+    "reference-hash", "db07b9d85f2786db29560bd50ae0e7a1",
     "description",
        _("Invert the components (except alpha) perceptually, "
          "the result is the corresponding \"negative\" image."),