[gnome-flashback] notifications: disconnect signal handler

[Alberts Muktupāvels <muktupavels src gnome org>]

commit 26592ac89d4b1fd05adac417040110473da6bade
Author: Alberts Muktupāvels <alberts muktupavels gmail com>
Date:   Mon Apr 25 21:57:40 2016 +0300

    notifications: disconnect signal handler
    
    Regression from 302df76438ad7f7cba75c2fe949daffb9d701155.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=765128

 gnome-flashback/libnotifications/gf-bubble.c |   13 ++++++++++---
 1 files changed, 10 insertions(+), 3 deletions(-)
---
diff --git a/gnome-flashback/libnotifications/gf-bubble.c b/gnome-flashback/libnotifications/gf-bubble.c
index ce74fd1..a97ba15 100644
--- a/gnome-flashback/libnotifications/gf-bubble.c
+++ b/gnome-flashback/libnotifications/gf-bubble.c
@@ -47,6 +47,7 @@ typedef struct
   gboolean        url_clicked_lock;
 
   guint           timeout_id;
+  gulong          changed_id;
 } GfBubblePrivate;
 
 G_DEFINE_TYPE_WITH_PRIVATE (GfBubble, gf_bubble, GF_TYPE_POPUP_WINDOW)
@@ -413,6 +414,12 @@ gf_bubble_dispose (GObject *object)
       priv->timeout_id = 0;
     }
 
+  if (priv->changed_id != 0)
+    {
+      g_signal_handler_disconnect (priv->notification, priv->changed_id);
+      priv->changed_id = 0;
+    }
+
   G_OBJECT_CLASS (gf_bubble_parent_class)->dispose (object);
 }
 
@@ -665,9 +672,9 @@ gf_bubble_new_for_notification (NdNotification *notification)
   priv = gf_bubble_get_instance_private (bubble);
 
   priv->notification = g_object_ref (notification);
-
-  g_signal_connect (notification, "changed",
-                    G_CALLBACK (notification_changed_cb), bubble);
+  priv->changed_id = g_signal_connect (notification, "changed",
+                                       G_CALLBACK (notification_changed_cb),
+                                       bubble);
 
   update_bubble (bubble);