RFR: 8257750: writeBuffer field of java.io.DataOutputStream should be final [v2]

[Brian Burkhalter]

> Please review this trivial change to make the `writeBuffer` array field final and move it to the beginning of the class where other fields are declared.

Brian Burkhalter has updated the pull request incrementally with one additional commit since the last revision:

  8257750: Change "byte writeBuffer[]" to "byte[] writeBuffer"

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Changes:
  - all: https://git.openjdk.java.net/jdk/pull/1627/files
  - new: https://git.openjdk.java.net/jdk/pull/1627/files/c994c07c..0ddd1068

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=1627&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=1627&range=00-01

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.java.net/jdk/pull/1627.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/1627/head:pull/1627

PR: https://git.openjdk.java.net/jdk/pull/1627