Hi, thank you very much for development of mruby

I found a issue. I executed below script (test.rb) by command prompt like mruby.exe test.rb

TCPServer.open("127.0.0.1", 0) { |serv|
  c = TCPSocket.new(*serv.addr.values_at(3,1))
  s = serv.accept
  c.send "foo", 4
  p s.recv(10)
  c.write "bar"
  p s.recv(10)
}

Then an below exception happens

trace (most recent call last):
        [3] test.rb:1
        [2] test.rb:1:in open
        [1] test.rb:8
test.rb:8:in write: Bad file descriptor - syswrite (Errno::EBADF)

• I don't face this issue with 3.1.0. When I use 3.2.0, this issue occurs.

• I'm Windows user. I'm using Windows 10 Pro or Windows 11. I found this issue with both Windows version.

• I'm building mruby.exe by using ridk which is installed by Ruby installer for Windows (`3.1.2p20 ) like below command.

ridk exec rake all test