Submitted by 0xRajeev
Misplaced zero-address check for nfthub on L595 in createMarket() because nfthub cannot be 0 at this point as nfthub.addMarket() on L570 would have already reverted if that were the case.
Recommend moving nfthub zero-address check to before the call to nfthub.addMarket().
Splidge (Reality Cards) confirmed and resolved:
