Fixed wait_stream flag, for compilation without GPU

AlexeyAB

2018-01-17 5a2a5679708c098a9d9d5973bc485f2e3c35c61d

 src/network.h

@@ -64,6 +64,7 @@
    #ifdef GPU
    float **input_gpu;
    float **truth_gpu;
   int wait_stream;
    #endif
} network;