window: Avoid redundantly getting the GDK window

meta-pick of commit c1573a1fda7c3b917b6809795b9668629fe58883: the
variable gdk_window is used in a check, but we may as well use it again
to avoid calling _gtk_widget_get_window() again unnecessarily.

diff --git a/gtk/gtkwindow.c b/gtk/gtkwindow.c
index 26cac439ad3dac6ce43144e8737561c6eeae9988..2b89332fcf48ccc8bb509f79ad9a15747d638558 100644 (file)
--- a/gtk/gtkwindow.c
+++ b/gtk/gtkwindow.c
@@ -4552,7 +4552,7 @@ gtk_window_realize_icon (GtkWindow *window)
 
   info->realized = TRUE;
 
-  gdk_window_set_icon_list (_gtk_widget_get_window (widget), icon_list);
+  gdk_window_set_icon_list (gdk_window, icon_list);
   if (GTK_IS_HEADER_BAR (priv->title_box))
     _gtk_header_bar_update_window_icon (GTK_HEADER_BAR (priv->title_box), window);