Werk #6505: Avoid CMC crash during event helper restarts.

Component Core & setup
Title Avoid CMC crash during event helper restarts.
Date Oct 18, 2018
Checkmk Edition Checkmk Enterprise (CEE)
Checkmk Version 1.5.0p7 1.6.0b1
Level Trivial Change
Class Bug Fix
Compatibility Compatible - no manual interaction needed

When an event helper (for notifications/alerts) should be restarted, the Check_MK Micro Core could go into an infinite recursion, ultimately leading to a crash of the CMC itself. This has been fixed.

CMK-1117

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