Fix style issues.
Fix style issues.

jnishi/chainer,rezoo/chainer,wkentaro/chainer,keisuke-umezawa/chainer,ktnyt/chainer,okuta/chainer,chainer/chainer,okuta/chainer,cupy/cupy,truongdq/chainer,hvy/chainer,sinhrks/chainer,muupan/chainer,chainer/chainer,anaruse/chainer,AlpacaDB/chainer,wkentaro/chainer,cupy/cupy,hvy/chainer,cemoody/chainer,pfnet/chainer,okuta/chainer,ktnyt/chainer,ktnyt/chainer,niboshi/chainer,hvy/chainer,wkentaro/chainer,ktnyt/chainer,t-abe/chainer,niboshi/chainer,cupy/cupy,kashif/chainer,delta2323/chainer,niboshi/chainer,AlpacaDB/chainer,ysekky/chainer,ronekko/chainer,chainer/chainer,truongdq/chainer,kikusu/chainer,benob/chainer,hvy/chainer,aonotas/chainer,jnishi/chainer,benob/chainer,niboshi/chainer,kikusu/chainer,tkerola/chainer,cupy/cupy,jnishi/chainer,okuta/chainer,jnishi/chainer,keisuke-umezawa/chainer,chainer/chainer,muupan/chainer,sinhrks/chainer,t-abe/chainer,kiyukuta/chainer,keisuke-umezawa/chainer,keisuke-umezawa/chainer,wkentaro/chainer