Changing Reply-Message for expired Password

[Tim White]

$ freeradius -v
freeradius: FreeRADIUS Version 1.1.6, for host i486-pc-linux-gnu, built 
on Jun  8 2007 at 17:17:46

I'm using Freeradius, with MySQL (rlm_sql) as the backend for Coova 
Chilli (and it's JSON interface). Unfortunately, the reply-message when 
the password is expired, contains a newline at the end, which breaks 
chilli (due to the newline being in the JSON object, which breaks).
Short of recompiling Freeradius with the newlines removed, is there an 
easier way to change this reply-message?

It appears in some versions of FreeRadius there is a rlm_expiration 
module or something which allows it to be changed?

If I have to upgrade manually (using Ubuntu Server), then I'm sure I can 
do that. But I'd rather not upgrade yet (seeing as everything other than 
that is work, so I don't want to break other stuff for a minor breakage).

Thanks

Tim