Dominik Meyer 38c69d8da1 FIX: subscribing when manager is unset ... One feature added to EventManager has been disconnecting a participant at runtime. Unfortunatly, then the manager of this participant is set to nullptr using the setManager method. But this method also subscribes to the shutdown event afterwords. This commit checks if the manager is nullptr and ignore subscribing in that case.		2023-07-03 12:23:04 +02:00
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EventManager	FIX: subscribing when manager is unset	2023-07-03 12:23:04 +02:00