make_ready_future<void> bug

Used boost version 1.76.0

next code from future.hpp, line 4388
promise\ have no emplace method
```
// variadic overload
#if ! defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)
template
BOOST_THREAD_FUTURE make_ready_future(Args&&... args)
{
promise p;
p.emplace(forward(args)...);
return p.get_future();

}
#endif
```

header contains correct function for promise\, but compiler always select variadic-templated method instead of normal