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bpo-31034: Reliable signal handler for test_asyncio (#2867)

* bpo-31034: Reliable signal handler for test_asyncio

Don't rely on the current SIGHUP signal handler, make sure that it's
set to the "default" signal handler: SIG_DFL.

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Victor Stinner committed
830080913c22a9834d310294b9f7653234dc6a59
Parent: 302bbbe
Committed by GitHub <noreply@github.com> on 7/25/2017, 5:19:09 PM