Minor error

[alexnas77]

https://github.com/leirn/php.syslog.class/blob/master/syslog.class.php

618

•        if($this->_rfc == NET_SYSLOG_RFC542X && $this->protocol == NET_SYSLOG_TLS) {
  

•        if($this->_rfc == NET_SYSLOG_RFC542X && $this->_protocol == NET_SYSLOG_TLS) {
  

There are
$protocol or $this->_protocol
but not
$this->protocol