Elias Ohm 52e3db279a Fix for double-free (and possibly other memory-corruption related) crashes at logrotate time
this is a direct fix of the issue revealing the problem that leads to crash

verification done with a patched icinga2 where the execution-order of the code lines of counter-parts involved in re-incrementing/decrementing Timer:Ptr is forced to be the one that leads to the obeserverd segfaults

refs #6737
2019-04-24 11:42:54 +02:00
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