Fixed compile error

AlexeyAB

2018-01-25 181ac4dfe32047d8a7e2088c0b4f394a7ba15849

 src/network.c

@@ -218,6 +218,7 @@
            state.delta = prev.delta;
        }
        layer l = net.layers[i];
        if (l.stopbackward) break;
        l.backward(l, state);
    }
}