Akira Ajisaka 13be7a849d YARN-4630. Remove useless boxing/unboxing code. Contributed by Kousuke Saruta.
(cherry picked from commit 1ff27f9d12e8124c1b9a722708264c5b07fd0fde)
(cherry picked from commit 8cf6630fc6cedbd86eff9da6f35ce1da4ed7ed2f)
2016-04-11 14:55:54 +09:00
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