language removal produces incorrect path to 'click.php' with certain languages

in the 'es' (spanish) language case

click_heatmap.module - line 152

'return str_replace($language->prefix . '/', '', $url);'

which returns ' http://www.mydomain.com/modulclick_heatmap/clickheat/click.php...'

should be replaced by

return str_replace('/'.$language->prefix . '/', '', $url);

to return: ' http://www.mydomain.com/modules/click_heatmap/clickheat/click.php...'

Such a minor bug, I think better yourself fix and commit it boombatower

Thank you for this helpful module :)