[jdk8u-dev] RFR: 8301760: Fix possible leak in SpNegoContext dispose [v3]

[Yuri Nesterenko]

> This is a small change fixing not very common but still existing in the wild issue in the stable code. Should not be risky.

Yuri Nesterenko has updated the pull request incrementally with one additional commit since the last revision:

  74ca6cca: <no commit message found>

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Changes:
  - all: https://git.openjdk.org/jdk8u-dev/pull/265/files
  - new: https://git.openjdk.org/jdk8u-dev/pull/265/files/b3d9a388..74ca6cca

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk8u-dev&pr=265&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk8u-dev&pr=265&range=01-02

  Stats: 0 lines in 0 files changed: 0 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk8u-dev/pull/265.diff
  Fetch: git fetch https://git.openjdk.org/jdk8u-dev pull/265/head:pull/265

PR: https://git.openjdk.org/jdk8u-dev/pull/265