message: rotating_light: remove C4996 warnings
  These were the remaining direct calls to alloc.
diff: @@ -8028,7 +8028,6 @@ class basic_json
  static T* create(Args&& ... args)
  {
  AllocatorType<T> alloc;
  -
  using AllocatorTraits = std::allocator_traits<AllocatorType<T>>;
  auto deleter = [&](T * object)
  @@ -10719,8 +10718,8 @@ class basic_json
  if (is_string())
  {
  AllocatorType<string_t> alloc;
  - alloc.destroy(m_value.string);
  - alloc.deallocate(m_value.string, 1);
  + std::allocator_traits<decltype(alloc)>::destroy(alloc, m_value.string);
  + std::allocator_traits<decltype(alloc)>::deallocate(alloc, m_value.string, 1);
  m_value.string = nullptr;
  }
  @@ -10825,8 +10824,8 @@ class basic_json
  if (is_string())
  {
  AllocatorType<string_t> alloc;
  - alloc.destroy(m_value.string);
  - alloc.deallocate(m_value.string, 1);
  + std::allocator_traits<decltype(alloc)>::destroy(alloc, m_value.string);
  + std::allocator_traits<decltype(alloc)>::deallocate(alloc, m_value.string, 1);
  m_value.string = nullptr;
  }
  