!1577 tracing: Fix warning in trace_buffered_event_disable()

Merge Pull Request from: @ci-robot 
 
PR sync from: Zheng Yejian <zhengyejian1@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/3WG2UV4CQDA6TN5UC7QQTE3L72C3FKPV/ 
 
https://gitee.com/openeuler/kernel/issues/I7P78X 
 
Link:https://gitee.com/openeuler/kernel/pulls/1577

 

Reviewed-by: Xu Kuohai <xukuohai@huawei.com>
Signed-off-by: Liu YongQiang <liuyongqiang13@huawei.com>