评论分数为空时空指针fix

alien-store/src/main/java/shop/alien/store/service/impl/StoreCommentServiceImpl.java

@@ -599,7 +599,7 @@ public class StoreCommentServiceImpl extends ServiceImpl<StoreCommentMapper, Sto
             StoreUser storeUser = storeUserMapper.selectOne(new LambdaQueryWrapper<StoreUser>().eq(StoreUser::getStoreId, storeInfo.getId()).eq(StoreUser::getDeleteFlag, 0));
 
             // 如果差评，则发送差评提醒
-            if(score >= 0.5 && score <= 2.5){
+            if(score != null && score >= 0.5 && score <= 2.5){
                 SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
                 String commonDate = simpleDateFormat.format(new Date());
                 LifeNotice lifeMessage = new LifeNotice();