[gtkmm] Gtk::Buildable: Fix the type of the user data in custom_tag_end_vfunc_callback()

[Kjell Ahlstedt <kjellahl src gnome org>]

commit 6661d881c6a3e190f191874dfb5bbc17e138239a
Author: Kjell Ahlstedt <kjellahlstedt gmail com>
Date:   Thu Oct 11 14:59:33 2018 +0200

    Gtk::Buildable: Fix the type of the user data in custom_tag_end_vfunc_callback()
    
    It was fixed (changed from gpointer* to gpointer) in
    GtkBuildable.custom_tag_end().

 gtk/src/buildable.ccg | 2 +-
 gtk/src/buildable.hg  | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/gtk/src/buildable.ccg b/gtk/src/buildable.ccg
index 51bb06b1..984025a8 100644
--- a/gtk/src/buildable.ccg
+++ b/gtk/src/buildable.ccg
@@ -61,7 +61,7 @@ void Buildable_Class::custom_tag_end_vfunc_callback(
   GtkBuilder* builder,
   GObject* child,
   const gchar* tagname,
-  gpointer* data)
+  gpointer data)
 {
   const auto base = static_cast<BaseClassType*>(
     g_type_interface_peek_parent( // Get the parent interface of the interface (The original underlying C 
interface).
diff --git a/gtk/src/buildable.hg b/gtk/src/buildable.hg
index a5e2444b..c989f6df 100644
--- a/gtk/src/buildable.hg
+++ b/gtk/src/buildable.hg
@@ -106,7 +106,7 @@ dnl
       GtkBuilder* builder,
       GObject* child,
       const gchar* tagname,
-      gpointer* data);
+      gpointer data);
   _POP()
 #m4end
 };