message: struct InferenceContext needs a virtual destructor
diff: @@ -41,6 +41,7 @@ struct InferenceContext {
  virtual const TypeProto_Tensor* getInputType(size_t index) const = 0;
  virtual size_t getNumOutputTypes() const = 0;
  virtual TypeProto_Tensor* getOutputType(size_t index) = 0;
  + virtual ~InferenceContext() {}
  };
  typedef void (*InferenceFunction)(InferenceContext&);
  