Fix systematic abort when the 'event-logs' feature is enabled
Fix systematic abort when the 'event-logs' feature is enabled

The abort was caused by a typo while loading the value of
the 'event-logs/filesystem-directory' parameter.

BelledonneCommunications/flexisip,BelledonneCommunications/flexisip,BelledonneCommunications/flexisip,BelledonneCommunications/flexisip