treeview: fix the build

diff --git a/gtk/gtktreeview.c b/gtk/gtktreeview.c
index cab0f52402c744438a12c41ad9fb9a10ed658c5b..3f32c8780d9476a5d6c7006949c3ed9a72586b7a 100644 (file)
--- a/gtk/gtktreeview.c
+++ b/gtk/gtktreeview.c
@@ -2185,7 +2185,7 @@ gtk_tree_view_ensure_background (GtkTreeView *tree_view)
 {
   GtkStyleContext *context;
 
-  context = gtk_widget_get_style_context (widget);
+  context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
 
   gtk_style_context_save (context);
   gtk_style_context_add_class (context, GTK_STYLE_CLASS_VIEW);