Constructor argument of `cancel_after_timer` is missing

[zhaohaiyun9]

asio/include/boost/asio/cancel_after.hpp

Line 161 in a7dc25b

timeout_, cancel_type_);

Second constructor argument (basic_waitable_timer<Clock, WaitTraits, Executor>& timer) for cancel_after_timer<decay_t<CompletionToken>, Clock, WaitTraits, Executor> is missing here.