[gtk+] popover: Update scrollable on relative-to hierarchy changes

[Carlos Garnacho <carlosg src gnome org>]

commit 769ee1156de0cb2b4528e56234315848fc73acc8
Author: Carlos Garnacho <carlosg gnome org>
Date:   Wed Sep 28 19:56:49 2016 +0200

    popover: Update scrollable on relative-to hierarchy changes
    
    The relative-to widget may be reparented itself into/out of a
    scrollable. In this cases make the hierachy-changed handler to
    unset the parent scrollable when unparented, and look up again
    the parent scrollable after it's reparented.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=771812

 gtk/gtkpopover.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)
---
diff --git a/gtk/gtkpopover.c b/gtk/gtkpopover.c
index 94da422..abfb90f 100644
--- a/gtk/gtkpopover.c
+++ b/gtk/gtkpopover.c
@@ -1821,11 +1821,15 @@ _gtk_popover_parent_hierarchy_changed (GtkWidget  *widget,
   if (priv->window)
     _gtk_window_remove_popover (priv->window, GTK_WIDGET (popover));
 
+  if (priv->parent_scrollable)
+    gtk_popover_set_scrollable_full (popover, NULL);
+
   priv->window = new_window;
 
   if (new_window)
     {
       _gtk_window_add_popover (new_window, GTK_WIDGET (popover), priv->widget, TRUE);
+      gtk_popover_update_scrollable (popover);
       gtk_popover_update_position (popover);
     }