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Merge pull request #1052 from Bytom/fix_bug
authorPaladz <yzhu101@uottawa.ca>
Wed, 13 Jun 2018 07:03:11 +0000 (15:03 +0800)
committerGitHub <noreply@github.com>
Wed, 13 Jun 2018 07:03:11 +0000 (15:03 +0800)
handle node is nil bug


Trivial merge