This test seems only to be testing that Dial does not time out
immediately as a result of integer overflow; the precise time taken to
connect is immaterial. Replace naked loop with sub-tests.
Fixes #43069.
Change-Id: Ib5e38a1d8cd191b74c2bc7c26bef57b180e16f68
Reviewed-on: https://go-review.googlesource.com/c/go/+/355390
Trust: Michael Pratt <mpratt@google.com>
Run-TryBot: Michael Pratt <mpratt@google.com>
TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Damien Neil <dneil@google.com>