fix Future exception never retrieved in create_connection #590
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I also have observed that when I use asyncio.wait_for(...) around loop.create_connection in the timeout case I end up getting this logged to stdout(err?):
Future exception was never retrieved
future: <Future finished exception=gaierror(-2, 'Name or service not known')>
socket.gaierror: [Errno -2] Name or service not known
The code in this commit fixes this.