[gtk+] gtk: window: don't forget to realize popovers of subwindows

[Matthias Clasen <matthiasc src gnome org>]

commit ea1295c9ab40ab8c1b5b80ccf1575710c5ff6b86
Author: Lionel Landwerlin <llandwerlin gmail com>
Date:   Thu Aug 25 20:38:52 2016 +0100

    gtk: window: don't forget to realize popovers of subwindows
    
    https://bugzilla.gnome.org/show_bug.cgi?id=770307

 gtk/gtkwindow.c |    9 +++++++++
 1 files changed, 9 insertions(+), 0 deletions(-)
---
diff --git a/gtk/gtkwindow.c b/gtk/gtkwindow.c
index e44766c..d8b3c21 100644
--- a/gtk/gtkwindow.c
+++ b/gtk/gtkwindow.c
@@ -7183,6 +7183,15 @@ gtk_window_realize (GtkWidget *widget)
       gtk_widget_register_window (widget, gdk_window);
       gtk_widget_set_realized (widget, TRUE);
 
+      link = priv->popovers;
+
+      while (link)
+        {
+          GtkWindowPopover *popover = link->data;
+          link = link->next;
+          popover_realize (popover->widget, popover, window);
+        }
+
       return;
     }