OCSP stapling: fix error logging of successful OCSP responses. Due to a bad argument list, nginx worker would crash (SIGSEGV) while trying to log the fact that it received OCSP response with "revoked" or "unknown" certificate status. While there, fix similar (but non-crashing) error a few lines above. Signed-off-by: Piotr Sikora <piotr@cloudflare.com>