ec_paypal_api_comms calling old url function

On line 857 of ec_paypal.module the method ec_paypal_api_comms is calling url() and passing the query string as the 2nd parameter.

$url = url(ec_paypal_variable_get('ec_paypal_api_url', 'https://api-3t.paypal.com/nvp'), ec_receipt_query_string_encode($values));

As far as i can tell, this is how url() was coded in e-commerce 3, for version 4 the 2nd parameter should be an array, and this call should look something like this.

$url = url(ec_paypal_variable_get('ec_paypal_api_url', 'https://api-3t.paypal.com/nvp'), array('query' => ec_receipt_query_string_encode($values)));