Null reference when checking food need of pawns that lack that need

[Inglix]

This check for a pawn's food need can result in null reference if the pawn doesn't have a food need.

https://github.com/simplyWiri/Loadout-Compositing/blob/92afafc95e5dca13e3fa036e344878650e47a436/Source/AI/ThinkNode_LoadoutRealisation.cs#L41