translation link does not consider query string

as it happens I have query string after the url, that needs to be passed to the translation link

for current url:
http://site.com/en/about/contact-web-form?clf=sbscr-nwsltr
the translation link did not had ?clf=sbscr-nwsltr
To fix this I added 'query' => drupal_query_string_encode($_GET,array('q')) to the translation_link

I've attached a patch.