Fix truncated ReLU forward pass
Fix truncated ReLU forward pass

Bug was introduced in ce038058

EnjoyHacking/faster-rnnlm,EnjoyHacking/faster-rnnlm,yanqingmen/faster-rnnlm,yanqingmen/faster-rnnlm,yandex/faster-rnnlm,evilmucedin/faster-rnnlm,yandex/faster-rnnlm,evilmucedin/faster-rnnlm,yanqingmen/faster-rnnlm,yandex/faster-rnnlm,EnjoyHacking/faster-rnnlm,evilmucedin/faster-rnnlm