two deallocations in url_result_thread in smsbox

Hi List,

I think we have a problem in smsbox:

Url_result_thread has octstr_destroy(charset). Charset is copied 
(without allocation) to msg structure, and deallocated
when msg_destroy is called.

And another thing: is there are no charset defined with content type, 
default is, as per rfc 2616, iso-8859-1.

Aarno