OVCCGtk: workaround type-func issue in connection dialog

Workaround the load of OVCCGtkMessageInfo as type-func seems currently
sort-of broken (unused), by pre-loading the type forcefully.
See: https://bugzilla.gnome.org/show_bug.cgi?id=786932

clients/ovcc-gtk/src/ovccgtk-connection-dialog.c

@@ -220,6 +220,10 @@ ovccgtk_connection_dialog_init (OVCCGtkConnectionDialog *self)
 {
   self->priv = ovccgtk_connection_dialog_get_instance_private (self);
   
+  /* register the type manually while type-func is brok^W not prefered
+     see https://bugzilla.gnome.org/show_bug.cgi?id=786932 */
+  g_type_ensure (OVCCGTK_TYPE_MESSAGE_INFO);
+
   gtk_widget_init_template (GTK_WIDGET (self));
   
   gtk_dialog_set_default_response (GTK_DIALOG (self), GTK_RESPONSE_OK);