RFR: 8282036: [Test]: Update java/util/zip/ZipFile/DeleteTempJar.java to stop HttpServer cleanly in case of exceptions [v3]

[Thejasvi Voniadka]

> This is a simple change to add some protective code to java/util/zip/ZipFile/DeleteTempJar.java so that the clean-up is more complete in the event of encountering an any exceptions while running. In the present state, the server.stop() does not get executed in case of encountering a failure. As a result, the test may get hung until a timeout. This fix should address the scenario.
> 
> The test passes on all supported platforms post fix.

Thejasvi Voniadka has updated the pull request incrementally with one additional commit since the last revision:

  8282036: [Test]: Update java/util/zip/ZipFile/DeleteTempJar.java to stop HttpServer cleanly in case of exceptions

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Changes:
  - all: https://git.openjdk.org/jdk/pull/9293/files
  - new: https://git.openjdk.org/jdk/pull/9293/files/1a2afd8c..498ed31c

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=9293&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=9293&range=01-02

  Stats: 3 lines in 1 file changed: 0 ins; 2 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/9293.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/9293/head:pull/9293

PR: https://git.openjdk.org/jdk/pull/9293