!3110 spdxcheck.py: Fix a type error

Merge Pull Request from: @ci-robot 
 
PR sync from: Jialin Zhang <zhangjialin11@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/6BWSXMA375YZVVRMDV3E7MPVN7ZIYTEG/ 
 
https://gitee.com/openeuler/kernel/issues/I7E2XC 
 
Link:https://gitee.com/openeuler/kernel/pulls/3110

 

Reviewed-by: Xie XiuQi <xiexiuqi@huawei.com>
Signed-off-by: Jialin Zhang <zhangjialin11@huawei.com>