fix refactoring#3

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YoheiKakiuchi wants to merge 1 commit intojvrc:masterfrom

YoheiKakiuchi:fix_segfault

Commits on Jan 12, 2016

fix code add to https://github.com/jvrc/JVRCPlugin/commit/3ecc5860b198d6dffb0e25b8a81db35bc7cde3f4
YoheiKakiuchi
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