Prevent type-error on services in a line

app/models/handlers.js

 /*
 This file is part of the Juju GUI, which lets users view and manage Juju
 environments within a graphical interface (https://launchpad.net/juju-gui).
 Copyright (C) 2012-2013 Canonical Ltd.
 
 This program is free software: you can redistribute it and/or modify it under
 the terms of the GNU Affero General Public License version 3, as published by
 the Free Software Foundation.
 
 This program is distributed in the hope that it will be useful, but WITHOUT
@@ skipping 133 matching lines @@
       @param {Object} db The app.models.models.Database instance.
       @param {String} action The operation to be performed
        ("add", "change" or "remove").
       @param {Object} change The JSON entity information.
       @param {String} kind The delta event type.
       @return {undefined} Nothing.
      */
     unitInfo: function(db, action, change) {
       var unitData = {
         id: change.Name,
+        charm_url: change.CharmURL,
         service: change.Service,
         machine: change.MachineId,
         agent_state: change.Status,
         agent_state_info: change.StatusInfo,
         public_address: change.PublicAddress,
         private_address: change.PrivateAddress,
         open_ports: utils.convertOpenPorts(change.Ports)
       };
       var machineData = {
         id: change.MachineId,
@@ skipping 114 matching lines @@
     }
 
   };
 
 }, '0.1.0', {
   requires: [
     'base',
     'array-extras'
   ]
 });