net: remove erroneous Dial check in TestListenerClose

This is a cherry-pick of
https://github.com/golang/go/commit/36db10f3cb916a1b97af3bfd4be7e3a2932185f8.

Original change's description:
> TestListenerClose had been asserting that a Dial to the newly-closed
> address always fails, on the assumption that the listener's address
> and port would not be reused by some other listener that could then
> accept the connection.
>
> As far as I can tell, that assumption is not valid: the Dial after
> Close may well connect to a Listener opened for some other test, or
> even one opened by a completely different process running concurrently
> on the same machine.
>
> Fixes #38700
>
> Change-Id: I925ed1b2ccb556135a2c5be0240d1789ed27d5fc
> Reviewed-on: https://go-review.googlesource.com/c/go/+/370666
> Trust: Bryan Mills <bcmills@google.com>
> Run-TryBot: Bryan Mills <bcmills@google.com>
> TryBot-Result: Gopher Robot <gobot@golang.org>
> Reviewed-by: Ian Lance Taylor <iant@golang.org>

Fixed: 98794
Change-Id: I05bc5c69b0ac56d856c96ab85a9526da4da3f982
Reviewed-on: https://fuchsia-review.googlesource.com/c/third_party/go/+/672704
Fuchsia-Auto-Submit: Ghanan Gowripalan <ghanan@google.com>
Reviewed-by: Tamir Duberstein <tamird@google.com>
Commit-Queue: Auto-Submit <auto-submit@fuchsia-infra.iam.gserviceaccount.com>
1 file changed
tree: 2a59a85616d5411e851503328d7d91eb82c2646a
  1. .github/
  2. api/
  3. doc/
  4. lib/
  5. makefuchsia/
  6. makeroot/
  7. meta/
  8. misc/
  9. src/
  10. test/
  11. .gitattributes
  12. .gitignore
  13. AUTHORS
  14. BUILD.gn
  15. codereview.cfg
  16. CONTRIBUTING.md
  17. CONTRIBUTORS
  18. LICENSE
  19. OWNERS
  20. PATENTS
  21. README.md
  22. regen-api
  23. regen-fidl
  24. regen-syscalls
  25. SECURITY.md
  26. VERSION
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