Fix copied optimizersetup.ts

I can't realistically maintain this thing but.

src/state/optimizer-parallel/optimizerSetup.ts

@@ -839,7 +839,7 @@ export function createSettings(reduxState: any): Settings {
           number,
         ][];
         for (const [type, bonus] of bonuses) {
-          for (const stat of Affix[affix].bonuses[type]) {
+          for (const stat of Affix[affix].bonuses[type] ?? []) {
             statTotals[stat] = (statTotals[stat] || 0) + bonus;
           }
         }