[jdk8u-dev] RFR: 8288763: Pack200 extraction failure with invalid size

[Tyler Steele]

Backports this change to jdk8 to fix the pack200 compressed size issue here as well.

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Commit messages:
 - Backport 5e1ce54d6a11eac153a6e6487bc0b4ed89741b5b

Changes: https://git.openjdk.org/jdk8u-dev/pull/86/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk8u-dev&pr=86&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8288763
  Stats: 2 lines in 1 file changed: 2 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk8u-dev/pull/86.diff
  Fetch: git fetch https://git.openjdk.org/jdk8u-dev pull/86/head:pull/86

PR: https://git.openjdk.org/jdk8u-dev/pull/86