Code Error - Jailkit Update on every cron change

Summary

Every time a cron is edited or added the jailkit update is triggered.

Steps to reproduce

Edit a cron of a website that recently received a jailkit update. => The Update will be triggered every time

Correct behaviour

Only Update if the check hash changed.

Proposed fix

File: /usr/local/ispconfig/server/plugins-enabled/cron_jailkit_plugin.inc.php Function: function _setup_jailkit_chroot

Line 232: global $app;

New Line: global $app, $conf;

Line: 296: if ($update_hash == $parent_domain['last_jailkit_hash']) {

New Line: if ($update_hash == $this->parent_domain['last_jailkit_hash']) {