RFR: 8327182: Move serverAlias into the loop [v2]

[John Jiang]

> In method `X509Authentication::createServerPossession`, it looks unnecessary to define variable `serverAlias` out of the for-loop.
> It may be better to move `serverAlias` into that loop to narrow down the scope.

John Jiang has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains two commits:

 - Merge branch 'master' into JDK-8327182
 - 8327182: Move serverAlias into the loop

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Changes: https://git.openjdk.org/jdk/pull/18100/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=18100&range=01
  Stats: 2 lines in 1 file changed: 1 ins; 1 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/18100.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/18100/head:pull/18100

PR: https://git.openjdk.org/jdk/pull/18100