!3996 hfs: fix null-ptr-deref in hfs_find_init()

Merge Pull Request from: @ci-robot 
 
PR sync from: Long Li <leo.lilong@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/KSHHSSLOZLM4QKAICRBVAJLNL5XDSO5T/ 
 
https://gitee.com/src-openeuler/kernel/issues/I1TUD7 
 
Link:https://gitee.com/openeuler/kernel/pulls/3996

 

Reviewed-by: zhangyi (F) <yi.zhang@huawei.com>
Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com>