RFR: 8283411: InflaterInputStream holds on to a temporary byte array of 512 bytes

[Jaikiran Pai]

Can I please get a review of this change which handles https://bugs.openjdk.java.net/browse/JDK-8283411?

The commit here moves the temporary byte array from being a member of the class to a local variable within the `skip` method which is the only place where it is used as a temporary buffer.

tier1, tier2, tier3 tests have been run successfully with this change.

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Commit messages:
 - 8283411: InflaterInputStream holds on to a temporary byte array of 512 bytes

Changes: https://git.openjdk.java.net/jdk/pull/7875/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=7875&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8283411
  Stats: 3 lines in 1 file changed: 1 ins; 2 del; 0 mod
  Patch: https://git.openjdk.java.net/jdk/pull/7875.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/7875/head:pull/7875

PR: https://git.openjdk.java.net/jdk/pull/7875