Zabbix

.......PS. [ZBXNEXT-297] fixed cpp check and go warnings

Merge in ZBX/zabbix from feature/ZBXNEXT-297-6.5 to master

* commit '20c9110528ae4ec8e2746480c6b5aef2e686db31':
  .......PS. [ZBXNEXT-297] fixed go warnings
  .......PS. [ZBXNEXT-297] fixed cppchecks