Update inception_inference.cpp

fix a bug when use --gpu

cpp-package/example/inference/inception_inference.cpp

@@ -301,7 +301,7 @@ void Predictor::PredictImage(const std::string& image_file) {
  executor->Forward(false);
 
  // The output is available in executor->outputs.
- auto array = executor->outputs[0].Copy(global_ctx);
+ auto array = executor->outputs[0].Copy(Context::cpu());
 
  /*
  * Find out the maximum accuracy and the index associated with that accuracy.