[jdk16u] Integrated: 8263430: Uninitialized Method* variables after JDK-8233913

[Harold Seigel]

The patch for this JDK-16u backport applied cleanly.  It was tested with Mach5 tiers 1 and 2 on Linux, Mac OS, and Windows.

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Commit messages:
 - Backport e25ad7309a5d8bf579b0f27f2f2a57228b9cec87

Changes: https://git.openjdk.java.net/jdk16u/pull/89/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk16u&pr=89&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8263430
  Stats: 3 lines in 3 files changed: 0 ins; 0 del; 3 mod
  Patch: https://git.openjdk.java.net/jdk16u/pull/89.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk16u pull/89/head:pull/89

PR: https://git.openjdk.java.net/jdk16u/pull/89