VMS build fix #2.
(cherry picked from commit a74bee5fc7929c55421d111cc5058a8eba8b97e1)
Fix free errors in ocsp utility.

Keep copy of any host, path and port values allocated by
OCSP_parse_url and free as necessary.
(cherry picked from commit 5219d3dd350cc74498dd49daef5e6ee8c34d9857)