Fix error thrown by PvP matches
Fix error thrown by PvP matches

api_name is a custom prop that isn't always set. Note that, if it is
not, battle prediction will not function correctly for night-to-day
nodes.

kololz/KC3Kai,kololz/KC3Kai,DynamicSTOP/KC3Kai,KC3Kai/KC3Kai,Yukinyaa/KC3Kai,sinsinpub/KC3Kai,Adrymne/KC3Kai,reinforce/KC3Kai,reinforce/KC3Kai,KC3Kai/KC3Kai,sinsinpub/KC3Kai,DynamicSTOP/KC3Kai,sinsinpub/KC3Kai,Adrymne/KC3Kai,kololz/KC3Kai,dragonjet/KC3Kai,reinforce/KC3Kai,Adrymne/KC3Kai,DynamicSTOP/KC3Kai,dragonjet/KC3Kai,Yukinyaa/KC3Kai,KC3Kai/KC3Kai