NonCopyable: Specify const in copy constructor/assignment signatures

Source/Core/Common/NonCopyable.h

@@ -12,6 +12,6 @@ protected:
 	~NonCopyable() = default;
 
 private:
-	NonCopyable(NonCopyable&) = delete;
-	NonCopyable& operator=(NonCopyable&) = delete;
+	NonCopyable(const NonCopyable&) = delete;
+	NonCopyable& operator=(const NonCopyable&) = delete;
 };