!5101 EDAC/thunderx: Fix possible out-of-bounds string access

Merge Pull Request from: @ci-robot 
 
PR sync from: Lu Jialin <lujialin4@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/GUYWWRYE3J5XOPKY6RZ544LR75LGLT4V/ 
 
https://gitee.com/src-openeuler/kernel/issues/I93EBW 
 
Link:https://gitee.com/openeuler/kernel/pulls/5101

 

Reviewed-by: Liu YongQiang <liuyongqiang13@huawei.com>
Signed-off-by: Zhang Changzhong <zhangchangzhong@huawei.com>