[boost] [Asio][ssl] develop broken

Subject: [boost] [Asio][ssl] develop broken
From: Damian Jarek (damian.jarek93_at_[hidden])
Date: 2019-02-18 22:56:02

After the changes today (introduced in
https://github.com/boostorg/asio/commit/0568d3bf0b492887c6c48d05f5492a782dafa746
)

an overload of async_handshake(
https://github.com/boostorg/asio/blob/develop/include/boost/asio/ssl/stream.hpp#L441)
fails to compile because of the signature mismatch in async_result.

This is a show-stopper, because it breaks quite a bit of code in Beast.