use G_DEFINE_TYPE_WITH_PRIVATE to replace g_type_class_add_private

gnc_tree_view_split_reg_get_type is being replaced by that provided by G_DEFINE_TYPE_WITH_PRIVATE

gnucash/gnome-utils/gnc-tree-view-split-reg.c

@@ -305,33 +305,7 @@ struct GncTreeViewSplitRegPrivate
 
 static GObjectClass *parent_class = NULL;
 
-GType
-gnc_tree_view_split_reg_get_type(void)
-{
-    static GType gnc_tree_view_split_reg_type = 0;
-
-    if (gnc_tree_view_split_reg_type == 0)
-    {
-        static const GTypeInfo our_info =
-        {
-            sizeof (GncTreeViewSplitRegClass),
-            NULL,
-            NULL,
-            (GClassInitFunc) gnc_tree_view_split_reg_class_init,
-            NULL,
-            NULL,
-            sizeof (GncTreeViewSplitReg),
-            0,
-            (GInstanceInitFunc) gnc_tree_view_split_reg_init
-        };
-
-        gnc_tree_view_split_reg_type = g_type_register_static (GNC_TYPE_TREE_VIEW,
-                                     "GncTreeViewSplitReg",
-                                     &our_info, 0);
-    }
-    return gnc_tree_view_split_reg_type;
-}
-
+G_DEFINE_TYPE_WITH_PRIVATE(GncTreeViewSplitReg, gnc_tree_view_split_reg, GNC_TYPE_TREE_VIEW)
 
 static void
 gnc_tree_view_split_reg_class_init (GncTreeViewSplitRegClass *klass)
@@ -345,8 +319,6 @@ gnc_tree_view_split_reg_class_init (GncTreeViewSplitRegClass *klass)
     o_class->dispose =  gnc_tree_view_split_reg_dispose;
     o_class->finalize = gnc_tree_view_split_reg_finalize;
 
-    g_type_class_add_private (klass, sizeof(GncTreeViewSplitRegPrivate));
-
     gnc_tree_view_split_reg_signals[UPDATE_SIGNAL] =
         g_signal_new("update_signal",
                      G_TYPE_FROM_CLASS (o_class),