[LTP] [PATCH] syscalls/umount2_02: remove useless TST_ERR assignment

[xuyang2018.jy@fujitsu.com]

Hi Petr,Dai
> Hi Dai,
>
>> Signed-off-by: Dai Shili<daisl.fnst@fujitsu.com>
>> ---
>>   testcases/kernel/syscalls/umount2/umount2_02.c | 1 -
>>   1 file changed, 1 deletion(-)
>
>> diff --git a/testcases/kernel/syscalls/umount2/umount2_02.c b/testcases/kernel/syscalls/umount2/umount2_02.c
>> index 4c3b30e..d1aed11 100644
>> --- a/testcases/kernel/syscalls/umount2/umount2_02.c
>> +++ b/testcases/kernel/syscalls/umount2/umount2_02.c
>> @@ -69,7 +69,6 @@ static int umount2_retry(const char *target, int flags)
>>   	tst_res(TWARN, "Failed to umount('%s', %i) after 50 retries",
>>   		target, flags);
>
>> -	TST_ERR = EBUSY;
>
> Not sure if the for loop in umount2_retry() could overwrite the original errno.
IMO,  in this wrapper, we don't need to use TEST macro and we can use 
umount2 directly.

Best Regards
Yang Xu
>
> Kind regards,
> Petr
>
>>   	return -1;
>>   }
>