RFR: 8269909: getStack method in hprof.parser.Reader should use try-with-resource [v4]

[Lin Zang]

> 8269909: getStack method in hprof.parser.Reader should use try-with-resource

Lin Zang has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains five additional commits since the last revision:

 - fix indentation issue
 - Merge branch 'master' into try
 - revise code to handle the closing of embeded streams
 - Merge branch 'master' into try
 - 8269909: getStack method in hprof.parser.Reader should use try-with-resource

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Changes:
  - all: https://git.openjdk.java.net/jdk/pull/4717/files
  - new: https://git.openjdk.java.net/jdk/pull/4717/files/36a30d84..ac2675f2

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=4717&range=03
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=4717&range=02-03

  Stats: 5179 lines in 279 files changed: 2861 ins; 1357 del; 961 mod
  Patch: https://git.openjdk.java.net/jdk/pull/4717.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/4717/head:pull/4717

PR: https://git.openjdk.java.net/jdk/pull/4717