Misc: Avoid setting up "invalid command" flood handling if its not enabled
Misc: Avoid setting up "invalid command" flood handling if its not enabled

Closes: Sf#3088554
Signed-off-by: James McCoy <6bb372d762f8b5716435b9b3c7d5babae139ce90@gmail.com>

ProgVal/Limnoria-test,Ban3/Limnoria,mazaclub/mazabot-core,ProgVal/Limnoria-test,Ban3/Limnoria,mazaclub/mazabot-core