!9653 ecryptfs: Fix buffer size for tag 66 packet

Merge Pull Request from: @ci-robot 
 
PR sync from: Hui Tang <tanghui20@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/R7JPE767WCXE44PWLOM7Y4ROKUIX5M24/ 
 
https://gitee.com/src-openeuler/kernel/issues/IA6S9H 
 
Link:https://gitee.com/openeuler/kernel/pulls/9653

 

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