[gimp] libgimp: fix gimp_procedure_add_*_from_property().

[Jehan <jehanp src gnome org>]

commit 5cd09366e143d2289ba94d4da4521545f443956e
Author: Jehan <jehan girinstud io>
Date:   Sat Aug 3 16:42:19 2019 +0200

    libgimp: fix gimp_procedure_add_*_from_property().
    
    Argh I changed the signature and added a new parameter, but forgot to
    update the implementation!

 libgimp/gimpprocedure.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)
---
diff --git a/libgimp/gimpprocedure.c b/libgimp/gimpprocedure.c
index 968d834e2a..c678d319d5 100644
--- a/libgimp/gimpprocedure.c
+++ b/libgimp/gimpprocedure.c
@@ -690,9 +690,10 @@ gimp_procedure_add_argument_from_property (GimpProcedure *procedure,
   GParamSpec *pspec;
 
   g_return_if_fail (GIMP_IS_PROCEDURE (procedure));
+  g_return_if_fail (G_IS_OBJECT (config));
   g_return_if_fail (prop_name != NULL);
 
-  pspec = g_object_class_find_property (G_OBJECT_GET_CLASS (procedure->priv->plug_in), prop_name);
+  pspec = g_object_class_find_property (G_OBJECT_GET_CLASS (config), prop_name);
 
   g_return_if_fail (pspec != NULL);
 
@@ -749,9 +750,10 @@ gimp_procedure_add_return_value_from_property (GimpProcedure *procedure,
   GParamSpec *pspec;
 
   g_return_if_fail (GIMP_IS_PROCEDURE (procedure));
+  g_return_if_fail (G_IS_OBJECT (config));
   g_return_if_fail (prop_name != NULL);
 
-  pspec = g_object_class_find_property (G_OBJECT_GET_CLASS (procedure->priv->plug_in), prop_name);
+  pspec = g_object_class_find_property (G_OBJECT_GET_CLASS (config), prop_name);
 
   g_return_if_fail (pspec != NULL);