Don't provide promises when we don't care about results. #437
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Motivation:
When we don't care about the result of an operation, we shouldn't provide
a promise.
While I'm here I also removed an unnecessary close() call in the
AcceptHandler: the close() would be called again almost immediately.
Modifications:
Removed a close() call.
Set
promise: nil
on a pair of close() calls.Result:
Fewer promise allocations.