fix LinearShift
fix LinearShift

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