修改重客抽奖小程序，用户信息存储逻辑

src/main/java/com/wangxiaolu/promotion/domain/lottery/dao/impl/LotteryCoreDaoImpl.java

@@ -90,10 +90,13 @@ public class LotteryCoreDaoImpl implements LotteryCoreDao {
             throw new ParamException(RCode.LOTTERY_RECORD_ERROR);
         }
 
+        
+        if (Objects.nonNull(userInfo)) {
             LotteryUserInfo lotteryUserInfo = new LotteryUserInfo();
             lotteryUserInfo = BeanUtils.transitionDto(userInfo, LotteryUserInfo.class);
             lotteryUserInfo.setOpenId(record.getWxOpenId());
             lotteryUserInfoMapper.insert(lotteryUserInfo);
+        }
         // 动态概率
         int prizeLevel = simpleDynamicPrize();
         record.setPrizeLevel(prizeLevel);