(fixes #1594) improved code readability
(fixes #1594) improved code readability

nise-nabe/ppcon-sns,tejima/OP3PKG,tejima/OP3PKG,openpne/OpenPNE3,openpne/OpenPNE3,openpne/OpenPNE3,nise-nabe/ppcon-sns,openpne/OpenPNE3