Zabbix

...G...... [ZBX-18886] implemented resource cleanup when sender terminates by signal

Merge in ZBX/zabbix from feature/ZBX-18886-5.2 to release/5.2

* commit 'f1f568a092bb6e184ba64dc3857b4b26907b73fd':
  ...G...... [ZBX-18886] moved log message about received signal from main process to child
  ...G...... [ZBX-18886] added changelog
  ...G...... [ZBX-18886] moved sig_exiting out from not windows macro
  ...G...... [ZBX-18886] implemented proper resource cleanup when sender terminates by signal