wayland: destroy subsurfaces along with parents

Wayland subsurfaces can have other native window parents, but those need
to be destroyed along with the rest of the window hierarchy otherwise
an assert() is reached.

https://bugzilla.gnome.org/show_bug.cgi?id=774915

diff --git a/gdk/gdkwindow.c b/gdk/gdkwindow.c
index 9ddec1bf08b95a7aa79fd99bc9c15b62fd9fbf01..f232f36d2370f3840c80ce575308f6266e5d33b6 100644 (file)
--- a/gdk/gdkwindow.c
+++ b/gdk/gdkwindow.c
@@ -1937,6 +1937,7 @@ _gdk_window_destroy_hierarchy (GdkWindow *window,
     case GDK_WINDOW_CHILD:
     case GDK_WINDOW_TEMP:
     case GDK_WINDOW_FOREIGN:
+    case GDK_WINDOW_SUBSURFACE:
       if (window->window_type == GDK_WINDOW_FOREIGN && !foreign_destroy)
        {
          /* Logically, it probably makes more sense to send