Fix kernel size
Fix kernel size

keisuke-umezawa/chainer,niboshi/chainer,niboshi/chainer,keisuke-umezawa/chainer,cupy/cupy,hvy/chainer,wkentaro/chainer,niboshi/chainer,ysekky/chainer,cupy/cupy,kashif/chainer,pfnet/chainer,keisuke-umezawa/chainer,jnishi/chainer,delta2323/chainer,keisuke-umezawa/chainer,aonotas/chainer,ktnyt/chainer,ktnyt/chainer,okuta/chainer,wkentaro/chainer,okuta/chainer,ktnyt/chainer,niboshi/chainer,chainer/chainer,hvy/chainer,tkerola/chainer,wkentaro/chainer,kiyukuta/chainer,anaruse/chainer,chainer/chainer,ronekko/chainer,rezoo/chainer,okuta/chainer,ktnyt/chainer,jnishi/chainer,chainer/chainer,chainer/chainer,hvy/chainer,jnishi/chainer,cupy/cupy,jnishi/chainer,okuta/chainer,wkentaro/chainer,hvy/chainer,cupy/cupy