Commit Briefs
free vars before assigning them
prevent a leaks if the server sends some parameter twice
close fcgi socket when not marked as keepalive
if the server hasn't specified the FCGI_KEEP_CONN bit in the request, close the socket when we're done. This seems to be what httpd(8) (most of the time) wants.
drop useless proxy_accept wrapper
just call fcgi_accept (with args tweaked)