[gtk/gtk-demo-fixes: 5/9] gtk-demo: Fix font explore initial state

[Matthias Clasen <matthiasc src gnome org>]

commit 663fb93af77d3824e73ce9a8cf9432414ad03ac4
Author: Matthias Clasen <mclasen redhat com>
Date:   Mon Dec 23 22:35:44 2019 -0500

    gtk-demo: Fix font explore initial state

 demos/gtk-demo/font_features.c | 2 ++
 1 file changed, 2 insertions(+)
---
diff --git a/demos/gtk-demo/font_features.c b/demos/gtk-demo/font_features.c
index dbd22e0663..ad0e30e95c 100644
--- a/demos/gtk-demo/font_features.c
+++ b/demos/gtk-demo/font_features.c
@@ -1337,6 +1337,8 @@ do_font_features (GtkWidget *do_widget)
                         G_CALLBACK (gtk_widget_destroyed), &window);
 
       g_object_unref (builder);
+
+      update_display ();
     }
 
   if (!gtk_widget_get_visible (window))