Fixed behavior if missing library cudnn.lib

AlexeyAB

2017-01-16 d7a30ada7e82daf7ce5ca91acac15c1723188fc5

 src/cost_layer.h

@@ -1,7 +1,7 @@
#ifndef COST_LAYER_H
#define COST_LAYER_H
#include "params.h"
#include "layer.h"
#include "network.h"

typedef layer cost_layer;