Fix IndexError on failure to close socket #237

You have commit messages with errors ⧗ input: Fix IndexError on failure to close socket It is possible for `loop.sock_connect` to fail in such a way that the wrapped socket no longer refers to a valid file descriptor. In this, the exception handler can fail on the attempt to call `sock.close()`. When this happens, `start_connection` can have `sock == None` and `exceptions == []`. This causes an `IndexError` because it assumes that `exceptions` always contains at least one exception instance. ✖ subject may not be empty [subject-empty] ✖ type may not be empty [type-empty] ✖ found 2 problems, 0 warnings ⓘ Get help: https://github.com/conventional-changelog/commitlint/#what-is-commitlint

test (3.8, macOS-latest)

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lint

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test (3.10, macOS-latest)

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test (3.10, ubuntu-20.04)