tree 971d138c43c015e843a48a7c7d073f2b4e763f6b
parent 6db0cd152acc1abaff229029bae86aa1268a6af1
author Huxing Zhang <huxing.zhang@gmail.com> 1526550796 +0800
committer Huxing Zhang <huxing.zhang@gmail.com> 1526550796 +0800

Remove unnecessary null check.