RFR: 8274809: Update java.base classes to use try-with-resources [v2]

[Andrey Turbanov]

> 8274809: Update java.base classes to use try-with-resources

Andrey Turbanov has updated the pull request incrementally with one additional commit since the last revision:

  8274809: Update java.base classes to use try-with-resources
  fix post-review comment

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Changes:
  - all: https://git.openjdk.java.net/jdk/pull/5818/files
  - new: https://git.openjdk.java.net/jdk/pull/5818/files/6d8ce900..78893df9

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=5818&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=5818&range=00-01

  Stats: 7 lines in 2 files changed: 1 ins; 1 del; 5 mod
  Patch: https://git.openjdk.java.net/jdk/pull/5818.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/5818/head:pull/5818

PR: https://git.openjdk.java.net/jdk/pull/5818