RFR: 8270903: sun.net.httpserver.HttpConnection: Improve toString

[Vyom Tewari]

On Thu, 29 Jul 2021 10:22:51 GMT, Julia Boes <jboes at openjdk.org> wrote:

> This is a minor change that updates `sun.net.httpserver.HttpConnection::toString` to never return null.
> 
> Testing: tier 1-3 all clear

Looks good.

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Marked as reviewed by vtewari (Committer).

PR: https://git.openjdk.java.net/jdk/pull/4928