Zabbix

...G...PS. [ZBX-16767] fixed possible null pointer dereference

* commit '820d07cf9ad78acc5f7b6b54847fce9c904872af':
  .D........ [ZBX-16767] added ChangeLog entry
  ...G...PS. [ZBX-16767] minor coding style improvement
  ...G...PS. [ZBX-16767] removed unnecessary assignment
  ...G...PS. [ZBX-16767] fixed possible null pointer dereference