[jdk25u] RFR: 8365700: Jar --validate without any --file option leaves around a temporary file /tmp/tmpJar<number>.jar

[Matthias Baesken]

8365700: Jar --validate without any --file option leaves around a temporary file /tmp/tmpJar<number>.jar

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Commit messages:
 - Backport 320235ccb88b4b554cd5756b7e6a34ce97aabd53

Changes: https://git.openjdk.org/jdk25u/pull/189/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk25u&pr=189&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8365700
  Stats: 2 lines in 1 file changed: 1 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk25u/pull/189.diff
  Fetch: git fetch https://git.openjdk.org/jdk25u.git pull/189/head:pull/189

PR: https://git.openjdk.org/jdk25u/pull/189