RO2 has an alergy for mutators with the name ReservedSlots

[Ducky]

Category: Code - Mutator

Scenario 1:

1. Create a mutator and name the binary ReservedSlots.u (just an empty mutator class is sufficient for the reproduction)
2. Add the this to the server command line: ?Mutator=ReservedSlots.ReservedSlots
3. Start the server
4. At this point the server will crash

Scenario 2:

1. Use the same mutator as above
2. Do not add it to the command line
3. Start the server
4. Go to the change map screen on the web-admin and tick the ReservedSlots mutator
5. Change the map
6. At this point the server will not crash and the mutator is correctly loaded/started

Scenario 3:

1. Use the same mutator as above
2. Rename the .u file to something else. For instance ReservedSlots123.u
3. Add the this to the server command line: ?Mutator=ReservedSlots123.ReservedSlots
4. Start the server
5. At this point the server will not crash and the mutator is correctly loaded/started

Reproducibility: Always

Scenario 3 could be used to bypass this bug, however in that case a white-listed ReservedSlots mutator won't be recognized anymore by the white-listing system and the server will be pushed to the unranked tab on the server browser.