Zabbix

...G...PS. [ZBX-10086] restored old behaviour - do not disable core dump if compiled without encryption support

Disabling of core dump was added in Zabbix 3.0 as part of encryption support (ZBXNEXT-1263).
However, it was added regardless of encryption support.

This change fixes it: disable core dump only if compiled with encryption support.
Also a compiler warning and whitespace is fixed.