Zabbix

..F....... [ZBX-25139] prevented sending of empty query_fields, headers or parameters for item testing

* commit 'cf15a9e71307e07ee8d32195a7d086ba1dcd538e':
  ..F....... [ZBX-25139] fixed incorrect index for clearing empty query_fields, headers or parameters

(cherry picked from commit 05a1b186d68748c4864bac3a9aa636902671db51)