change the way to detect loops
authorweiyu <weiyuluo1232@gmail.com>
Fri, 16 Aug 2019 23:59:31 +0000 (16:59 -0700)
committerweiyu <weiyuluo1232@gmail.com>
Fri, 16 Aug 2019 23:59:31 +0000 (16:59 -0700)

No differences found