gtkwindow: Fix cast warning

diff --git a/gtk/gtkwindow.c b/gtk/gtkwindow.c
index 7206fd82968ad82295de8fc191ff786d1fe48341..27fc7d1da59b397a8d8a2f6eb86cb08a6e75721e 100644 (file)
--- a/gtk/gtkwindow.c
+++ b/gtk/gtkwindow.c
@@ -11742,5 +11742,5 @@ void
 _gtk_window_get_decoration_size (GtkWindow *window,
                                  GtkBorder *border)
 {
-  get_decoration_size (window, border);
+  get_decoration_size (GTK_WIDGET (window), border);
 }