[gtk] window: Unrealize renderer before children

[Matthias Clasen <matthiasc src gnome org>]

commit 0284d40e24586278d3997ab2ace145ba16cbd9cc
Author: Matthias Clasen <mclasen redhat com>
Date:   Tue Oct 22 19:52:14 2019 -0400

    window: Unrealize renderer before children
    
    Unrealize the GSK renderer before destroying children.
    This makes the renderer drop any texture caches that
    it might have, so that we don't needlessly download
    them when releasing the widget-side holder objects.
    
    As a fortunate side effect, this fixes crashes on
    exit with GtkGLArea-containing windows under Wayland.

 gtk/gtkwindow.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
---
diff --git a/gtk/gtkwindow.c b/gtk/gtkwindow.c
index c93b733f61..4891a36167 100644
--- a/gtk/gtkwindow.c
+++ b/gtk/gtkwindow.c
@@ -5687,6 +5687,8 @@ gtk_window_unrealize (GtkWidget *widget)
       info->last.flags = 0;
     }
 
+  gsk_renderer_unrealize (priv->renderer);
+
   if (priv->popup_menu)
     {
       gtk_widget_destroy (priv->popup_menu);
@@ -5700,7 +5702,6 @@ gtk_window_unrealize (GtkWidget *widget)
                         (GtkCallback) gtk_widget_unrealize,
                         NULL);
 
-  gsk_renderer_unrealize (priv->renderer);
   g_clear_object (&priv->renderer);
 
   surface = priv->surface;