Handle the EmpathyIndividualWidget disappearing during an async details call

The EmpathyIndividualWidget may be destroyed between starting and finishing
an async call to get contact details. This patch prevents the finishing
callback from accessing private data which may have been freed.

1 files changed, 6 insertions, 3 deletions

diff --git a/libempathy-gtk/empathy-individual-widget.c b/libempathy-gtk/empathy-individual-widget.c
index 08a18d5ff..36cea8a5e 100644
--- a/libempathy-gtk/empathy-individual-widget.c
+++ b/libempathy-gtk/empathy-individual-widget.c
@@ -350,15 +350,18 @@ details_feature_prepared_cb (TpConnection *connection,
     DetailsData *data)
 {
   EmpathyIndividualWidget *self = data->widget;
-  EmpathyIndividualWidgetPriv *priv = GET_PRIV (self);
+  EmpathyIndividualWidgetPriv *priv = NULL;
 
-  if (tp_proxy_prepare_finish (connection, res, NULL) == FALSE)
+  if (tp_proxy_prepare_finish (connection, res, NULL) == FALSE || self == NULL)
     {
-      gtk_widget_hide (priv->vbox_details);
+      if (self != NULL)
+        gtk_widget_hide (GET_PRIV (self)->vbox_details);
       details_data_free (data);
       return;
     }
 
+  priv = GET_PRIV (self);
+
   /* Request the Individual's info */
   gtk_widget_show (priv->vbox_details);
   gtk_widget_show (priv->hbox_details_requested);