[gtk+] popover: Remove signal handlers in dispose

[Matthias Clasen <matthiasc src gnome org>]

commit ac931e95060c10dd44d0b6331d0f38e9b777d436
Author: Matthias Clasen <mclasen redhat com>
Date:   Wed Apr 8 20:20:38 2015 -0400

    popover: Remove signal handlers in dispose
    
    If we don't, they may get triggered at an inopportune
    time later, causing us to crash.
    
    See
    https://bugzilla.redhat.com/show_bug.cgi?id=1203499
    
    https://bugzilla.gnome.org/show_bug.cgi?id=747539

 gtk/gtkpopover.c |    5 ++++-
 1 files changed, 4 insertions(+), 1 deletions(-)
---
diff --git a/gtk/gtkpopover.c b/gtk/gtkpopover.c
index 97d13aa..37064c8 100644
--- a/gtk/gtkpopover.c
+++ b/gtk/gtkpopover.c
@@ -304,7 +304,10 @@ gtk_popover_dispose (GObject *object)
   GtkPopoverPrivate *priv = popover->priv;
 
   if (priv->window)
-    _gtk_window_remove_popover (priv->window, GTK_WIDGET (object));
+    {
+      g_signal_handlers_disconnect_by_data (priv->window, popover);
+      _gtk_window_remove_popover (priv->window, GTK_WIDGET (object));
+    }
 
   priv->window = NULL;