Rescue `Errno::EBADF` in `Client#close` (#2748)
Rescue `Errno::EBADF` in `Client#close` (#2748)

Spotted happening in CI: https://github.com/puma/puma/runs/4095295281?check_suite_focus=true

    2021-11-03 16:34:54 +0000 Exception handling servers: #<Errno::EBADF: Bad file descriptor>/Users/runner/work/puma/puma/lib/puma/client.rb:163:in `close': Bad file descriptor (Errno::EBADF)
    TestRackServer#test_large_post_body =
            from /Users/runner/work/puma/puma/lib/puma/client.rb:163:in `close'
puma/puma,puma/puma,eileencodes/puma,eileencodes/puma,puma/puma,eileencodes/puma,eileencodes/puma,puma/puma