Previously, the handler for
FolksIndividualAggregator::individuals-changed was never disconnected;
thus it could be called after EmpathyIndividualManager dies (if its
aggregator outlives it), and crash us.
https://bugzilla.gnome.org/show_bug.cgi?id=658340
EmpathyIndividualManagerPriv *priv = GET_PRIV (object);
g_hash_table_destroy (priv->individuals);
+
+ g_signal_handlers_disconnect_by_func (priv->aggregator,
+ aggregator_individuals_changed_cb, object);
tp_clear_object (&priv->aggregator);
G_OBJECT_CLASS (empathy_individual_manager_parent_class)->dispose (object);