[gimp] app: fix duplication of GeglParamSpecSeed, we missed its limits before

[Michael Natterer <mitch src gnome org>]

commit 2da25576c3a14bba06ddb395e8e1858a0c0a9beb
Author: Michael Natterer <mitch gimp org>
Date:   Tue Apr 17 00:12:01 2018 +0200

    app: fix duplication of GeglParamSpecSeed, we missed its limits before
    
    (which are probably never used, but still)

 app/core/gimpparamspecs-duplicate.c |    9 +++++++++
 1 files changed, 9 insertions(+), 0 deletions(-)
---
diff --git a/app/core/gimpparamspecs-duplicate.c b/app/core/gimpparamspecs-duplicate.c
index 595c9f8..135f230 100644
--- a/app/core/gimpparamspecs-duplicate.c
+++ b/app/core/gimpparamspecs-duplicate.c
@@ -160,11 +160,20 @@ gimp_param_spec_duplicate (GParamSpec *pspec)
     }
   else if (GEGL_IS_PARAM_SPEC_SEED (pspec))
     {
+      GParamSpecUInt    *spec  = G_PARAM_SPEC_UINT (pspec);
+      GeglParamSpecSeed *gspec = GEGL_PARAM_SPEC_SEED (pspec);
+
       copy = gegl_param_spec_seed (pspec->name,
                                    g_param_spec_get_nick (pspec),
                                    g_param_spec_get_blurb (pspec),
                                    pspec->flags |
                                    GIMP_CONFIG_PARAM_SERIALIZE);
+
+      G_PARAM_SPEC_UINT (copy)->minimum = spec->minimum;
+      G_PARAM_SPEC_UINT (copy)->maximum = spec->maximum;
+
+      GEGL_PARAM_SPEC_SEED (copy)->ui_minimum = gspec->ui_minimum;
+      GEGL_PARAM_SPEC_SEED (copy)->ui_maximum = gspec->ui_maximum;
     }
   else if (G_IS_PARAM_SPEC_INT (pspec))
     {