Fixed compile error

AlexeyAB

2018-01-25 181ac4dfe32047d8a7e2088c0b4f394a7ba15849

 src/network_kernels.cu

@@ -114,6 +114,7 @@
    state.truth = *net.truth_gpu;
    state.train = 1;
    forward_network_gpu(net, state);
   cudaStreamSynchronize(get_cuda_stream());
    backward_network_gpu(net, state);
}