contact_information is not translated once a user defined message is specified

filter_xss_admin(variable_get('contact_form_information', t('You can leave a message using the contact form below.'))));

The result of the variable_get expression in contact.pages.inc:41 is not translated with the t() function once a user defined a variable named 'contact_form_information'. The corrected version would be:

filter_xss_admin(t(variable_get('contact_form_information', 'You can leave a message using the contact form below.'))));

Otherwise translating the contact form information is not possible with a user defined string.