RFR: JDK-8285504 Minor cleanup could be done in javax.net [v5]

[Mark Powers]

> https://bugs.openjdk.java.net/browse/JDK-8285504
> 
> JDK-8273046 is the umbrella bug for this bug. The changes were too large for a single code review, so it was decided to split into smaller chunks. This is one such chunk: 
> 
> open/src/java.base/share/classes/java/net

Mark Powers has updated the pull request incrementally with one additional commit since the last revision:

  Max and Brad comments round two

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Changes:
  - all: https://git.openjdk.java.net/jdk/pull/8384/files
  - new: https://git.openjdk.java.net/jdk/pull/8384/files/6997837f..15a9f3b8

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=8384&range=04
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=8384&range=03-04

  Stats: 14 lines in 3 files changed: 7 ins; 2 del; 5 mod
  Patch: https://git.openjdk.java.net/jdk/pull/8384.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/8384/head:pull/8384

PR: https://git.openjdk.java.net/jdk/pull/8384