Avoid integer overflow in MoveGoodsToStation

In case where input cargo amount > 255

src/station_cmd.cpp

@@ -4339,7 +4339,7 @@ uint MoveGoodsToStation(CargoID type, uint amount, SourceType source_type, Sourc
 		uint owner = p.first->owner;
 		/* Multiply the amount by (company best / sum of best for each company) to get cargo allocated to a company
 		 * and by (station rating / sum of ratings in a company) to get the result for a single station. */
-		p.second = amount * company_best[owner] * p.first->goods[type].rating / best_sum / company_sum[owner];
+		p.second = ((uint64) amount) * ((uint64) company_best[owner]) * ((uint64) p.first->goods[type].rating) / (best_sum * company_sum[owner]);
 		moving += p.second;
 	}