chore: refactor nullchecks

Author: Dorus

Yafc/Workspace/ProductionTable/ProductionTableView.cs

@@ -691,7 +691,7 @@ async void addRecipe(Recipe rec) {
             var selectFuel = type != ProductDropdownType.Fuel ? null : (Action<Goods>)(fuel => {
                 recipe.RecordUndo().fuel = fuel;
             });
-            var allProduction = goods == null ? Array.Empty<Recipe>() : variants == null ? goods.production : variants.SelectMany(x => x.production).Distinct().ToArray();
+            Recipe[] allProduction = variants?.SelectMany(x => x.production).Distinct().ToArray() ?? goods?.production ?? [];
             var fuelDisplayFunc = recipe?.entity?.energy.type == EntityEnergyType.FluidHeat
                 ? (Func<Goods, string>)(g => DataUtils.FormatAmount(g.fluid?.heatValue ?? 0, UnitOfMeasure.Megajoule))
                 : g => DataUtils.FormatAmount(g.fuelValue, UnitOfMeasure.Megajoule);