lr_exit example

     int status = ftp_logon("FTP", "URL=ftp://user:pwd@ftp.merc-int.com",
            "LocalAddr=ca_server:21", "ClientCert=/ca/pem/",
               "ClientKey=/ca/pem/key/", "ClientPassword=@3#$8800cvd",
               "CertificateAuthority=/ca/", "SSLVersion=SSL3", LAST );

     if (status == LR_FAIL) {
          lr_error_message ("ftp login failed");
          lr_exit(LR_EXIT_VUSER, LR_FAIL);
     }