fix memory leaks on error

Jan Willamowius

2019-04-21 683e25de59b6b7307a9654b17a4c784e8897d33a

 src/library/base/EventRegistry.cpp

@@ -79,7 +79,7 @@
}

void EventRegistry::addError(EVENT_TYPE event) {
   addEvent(event, SVRT_ERROR);
   this->addEvent(event, SVRT_ERROR);
}

void EventRegistry::addEvent(EVENT_TYPE event, SEVERITY severity) {