Wrong MConf value in FListenerExploit

I think that's pretty obvious.
```bash
git checkout master
git checkout -b pr240
git pull https://github.com/riking/Factions.git patch-1
git rebase master # or rebase -i
git log # verify only one commit present
git checkout master
git merge --no-commit pr240
git log # verify it worked right
git push # release master
```