[telepathy-account-widgets] prevent infinite loop if ContactInfo is not implemented

[Guillaume Desmottes <gdesmott src gnome org>]

commit 505360b4be41a1bce0d06a3cbb4ca2eedc24c188
Author: Guillaume Desmottes <guillaume desmottes collabora co uk>
Date:   Wed Oct 9 13:40:43 2013 -0400

    prevent infinite loop if ContactInfo is not implemented
    
    https://bugzilla.gnome.org/show_bug.cgi?id=709677

 tp-account-widgets/tpaw-user-info.c |   11 ++++++++++-
 1 files changed, 10 insertions(+), 1 deletions(-)
---
diff --git a/tp-account-widgets/tpaw-user-info.c b/tp-account-widgets/tpaw-user-info.c
index c154048..60d8b5f 100644
--- a/tp-account-widgets/tpaw-user-info.c
+++ b/tp-account-widgets/tpaw-user-info.c
@@ -46,6 +46,8 @@ struct _TpawUserInfoPrivate
   GList *details_to_set;
   gboolean details_changed;
   GCancellable *details_cancellable;
+
+  gboolean tried_preparing_contact_info;
 };
 
 enum
@@ -401,10 +403,17 @@ reload_contact_info (TpawUserInfo *self)
     {
       contact = tp_connection_get_self_contact (connection);
 
+      /* FIXME: we should rely on the factory to do this, see bgo#706892 */
       if (!tp_proxy_is_prepared (connection,
-            TP_CONNECTION_FEATURE_CONTACT_INFO))
+            TP_CONNECTION_FEATURE_CONTACT_INFO) &&
+          !self->priv->tried_preparing_contact_info)
         {
           GQuark features[] = { TP_CONNECTION_FEATURE_CONTACT_INFO, 0 };
+
+          /* Prevent an infinite loop if the connection doesn't implement
+           * ContactInfo, see bgo#709677 */
+          self->priv->tried_preparing_contact_info = TRUE;
+
           tp_proxy_prepare_async (connection, features,
               connection_contact_info_prepared_cb, g_object_ref (self));
         }