treeview: Fix computing child paths

We were adding the GtkButton class twice.

diff --git a/gtk/gtktreeview.c b/gtk/gtktreeview.c
index 8217eb7bd3894ef5d04f726113cd744d2bcca00e..0b1599ee3721e13f9338f33cc74a6c5d7115f6e7 100644 (file)
--- a/gtk/gtktreeview.c
+++ b/gtk/gtktreeview.c
@@ -8548,13 +8548,11 @@ gtk_tree_view_get_path_for_child (GtkContainer *container,
       if (!list->next)
         flags |= GTK_REGION_LAST;
 
-      gtk_widget_path_iter_add_region (path, -1, GTK_STYLE_REGION_COLUMN_HEADER, flags);
+      gtk_widget_path_iter_add_region (path, gtk_widget_path_length (path) - 2, GTK_STYLE_REGION_COLUMN_HEADER, flags);
       break;
     }
   g_list_free (visible_columns);
 
-  gtk_widget_path_append_for_widget (path, child);
-
   return path;
 }