[gtk+] treeview: insert the column button css node in the right place

[Timm Bäder <baedert src gnome org>]

commit 9644bea2a5448237074068ba4d666019a19f1c6f
Author: Timm Bäder <mail baedert org>
Date:   Mon Apr 24 21:47:24 2017 +0200

    treeview: insert the column button css node in the right place
    
    Insert the css node before setting a parent widget on the column button,
    so the gtk_widget_set_parent won't attempt to add the css node as child
    of the parent widget css node.

 gtk/gtktreeview.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/gtk/gtktreeview.c b/gtk/gtktreeview.c
index 72c687e..118e6a5 100644
--- a/gtk/gtktreeview.c
+++ b/gtk/gtktreeview.c
@@ -11722,10 +11722,10 @@ gtk_tree_view_insert_column (GtkTreeView       *tree_view,
                                            column, position);
   tree_view->priv->n_columns++;
 
-  _gtk_tree_view_column_set_tree_view (column, tree_view);
-
   gtk_tree_view_update_button_position (tree_view, column);
 
+  _gtk_tree_view_column_set_tree_view (column, tree_view);
+
   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
     {
       GList *list;