Zabbix

...G...... [ZBX-15915] fixed linking error if round() is undefined

* commit '491d53847105d102fad6b559550408e9b868945c':
  ...G...... [ZBX-15915] fixed linking error if round() is undefined

(cherry picked from commit c178150cfa89e64c820ab14cc76530c89ab06e24)