Fix http-post-form redirect mangled and segfaulted
Fix http-post-form redirect mangled and segfaulted

Off by one error found when processing Location: in redirects.
Pointer handling mistake found when updating cookies after redirect.

veggiespam/thc-hydra,fr34k8/thc-hydra,darrencocco/thc-hydra,vanhauser-thc/thc-hydra,vanhauser-thc/thc-hydra,darrencocco/thc-hydra,darrencocco/thc-hydra,fr34k8/thc-hydra,veggiespam/thc-hydra,veggiespam/thc-hydra,veggiespam/thc-hydra,darrencocco/thc-hydra