fix Lost onclose event

[matyhtf]

No description provided.

[codecov]

Codecov Report

Merging #4204 (d8a0545) into master (6797e68) will increase coverage by 0.09%.
The diff coverage is 62.50%.

@@            Coverage Diff             @@
##           master    #4204      +/-   ##
==========================================
+ Coverage   50.11%   50.20%   +0.09%     
==========================================
  Files          71       71              
  Lines       14266    14263       -3     
==========================================
+ Hits         7149     7161      +12     
+ Misses       7117     7102      -15     

Impacted Files	Coverage Δ
src/os/signal.cc	73.61% <ø> (ø)
src/reactor/epoll.cc	75.23% <ø> (ø)
src/reactor/base.cc	74.55% <50.00%> (+0.77%)	⬆️
src/server/reactor_thread.cc	56.09% <50.00%> (-0.16%)	⬇️
src/server/master.cc	54.07% <100.00%> (+0.10%)	⬆️
src/os/wait.cc	74.11% <0.00%> (-7.06%)	⬇️
src/os/msg_queue.cc	57.62% <0.00%> (-3.39%)	⬇️
src/coroutine/socket.cc	39.44% <0.00%> (+0.47%)	⬆️
src/os/async_thread.cc	69.73% <0.00%> (+0.87%)	⬆️
src/protocol/base.cc	63.15% <0.00%> (+1.97%)	⬆️
... and 1 more

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