[empathy/gnome-2-34] Only add the 'extra-certificate-identities' parameter if gabble supports it.

[Stefan Walter <stefw src gnome org>]

commit d5ee1dea31080835f3c1ca091c58769fc989b037
Author: Stef Walter <stefw collabora co uk>
Date:   Tue Mar 22 16:08:34 2011 +0100

    Only add the 'extra-certificate-identities' parameter if gabble supports it.

 libempathy/empathy-account-settings.c |    7 +++++++
 libempathy/empathy-account-settings.h |    4 ++++
 src/empathy-account-assistant.c       |   10 +++++++---
 3 files changed, 18 insertions(+), 3 deletions(-)
---
diff --git a/libempathy/empathy-account-settings.c b/libempathy/empathy-account-settings.c
index 2a9afab..fccc58e 100644
--- a/libempathy/empathy-account-settings.c
+++ b/libempathy/empathy-account-settings.c
@@ -756,6 +756,13 @@ empathy_account_settings_get_tp_param (EmpathyAccountSettings *settings,
   return NULL;
 }
 
+gboolean
+empathy_account_settings_have_tp_param (EmpathyAccountSettings *settings,
+    const gchar *param)
+{
+  return (empathy_account_settings_get_tp_param (settings, param) != NULL);
+}
+
 static void
 account_settings_remove_from_unset (EmpathyAccountSettings *settings,
     const gchar *param)
diff --git a/libempathy/empathy-account-settings.h b/libempathy/empathy-account-settings.h
index 3a2264e..e02854a 100644
--- a/libempathy/empathy-account-settings.h
+++ b/libempathy/empathy-account-settings.h
@@ -83,6 +83,10 @@ gboolean empathy_account_settings_has_account (
 TpConnectionManagerParam *empathy_account_settings_get_tp_params (
     EmpathyAccountSettings *settings);
 
+gboolean empathy_account_settings_have_tp_param (
+    EmpathyAccountSettings *settings,
+    const gchar *param);
+
 void empathy_account_settings_unset (EmpathyAccountSettings *settings,
     const gchar *param);
 
diff --git a/src/empathy-account-assistant.c b/src/empathy-account-assistant.c
index 4beda4b..e84fa65 100644
--- a/src/empathy-account-assistant.c
+++ b/src/empathy-account-assistant.c
@@ -422,7 +422,7 @@ account_assistant_protocol_changed_cb (GtkComboBox *chooser,
           "talkx.l.google.com:80",
           NULL};
 
-      gchar *extra_identities[] = {
+      gchar *extra_certificate_identities[] = {
           "talk.google.com",
           NULL};
 
@@ -432,8 +432,12 @@ account_assistant_protocol_changed_cb (GtkComboBox *chooser,
       empathy_account_settings_set_strv (settings, "fallback-servers",
           fallback_servers);
 
-      empathy_account_settings_set_strv (settings, "extra-identities",
-          extra_identities);
+      if (empathy_account_settings_have_tp_param (settings,
+              "extra-certificate-identities"))
+        {
+          empathy_account_settings_set_strv (settings,
+                  "extra-certificate-identities", extra_certificate_identities);
+        }
     }
   else if (is_facebook)
     {