address potential double free memory (#1734)

src/ngraph/runtime/cpu/cpu_call_frame.hpp

@@ -59,6 +59,10 @@ namespace ngraph
                 void cleanup_runtime_context();
 
             protected:
+                CPU_CallFrame(const CPU_CallFrame&) = delete;
+                CPU_CallFrame(CPU_CallFrame&&) = delete;
+                CPU_CallFrame& operator=(const CPU_CallFrame&) = delete;
+
                 std::shared_ptr<CPU_ExternalFunction> m_external_function;
                 EntryPoint m_compiled_function;
                 CPURuntimeContext* ctx;

src/ngraph/runtime/gpu/gpu_tensor.hpp

@@ -55,4 +55,9 @@ public:
     void* m_allocated_buffer_pool = nullptr;
     size_t m_buffer_size;
     bool m_custom_memory;
+
+private:
+    GPUTensor(const GPUTensor&) = delete;
+    GPUTensor(GPUTensor&&) = delete;
+    GPUTensor& operator=(const GPUTensor&) = delete;
 };