[gtk+] window: Always disconnect signal handlers

[Matthias Clasen <matthiasc src gnome org>]

commit 625f3e5f3940192ed21519c2477bd283a3fa4ae2
Author: Matthias Clasen <mclasen redhat com>
Date:   Wed Jan 27 13:07:13 2016 -0500

    window: Always disconnect signal handlers
    
    We connect to the titlebar widgets change notification regardless
    whether it is internally created or not, so don't make the signal
    handler disconnection conditional on that either.

 gtk/gtkwindow.c |    8 +++-----
 1 files changed, 3 insertions(+), 5 deletions(-)
---
diff --git a/gtk/gtkwindow.c b/gtk/gtkwindow.c
index 2ff433d..d86f74f 100644
--- a/gtk/gtkwindow.c
+++ b/gtk/gtkwindow.c
@@ -4028,13 +4028,11 @@ unset_titlebar (GtkWindow *window)
 {
   GtkWindowPrivate *priv = window->priv;
 
-  if (priv->titlebar != NULL)
-    g_signal_handlers_disconnect_by_func (priv->titlebar,
-                                          on_titlebar_title_notify,
-                                          window);
-
   if (priv->title_box != NULL)
     {
+      g_signal_handlers_disconnect_by_func (priv->title_box,
+                                            on_titlebar_title_notify,
+                                            window);
       gtk_widget_unparent (priv->title_box);
       priv->title_box = NULL;
       priv->titlebar = NULL;