[jdk17u-dev] RFR: 8289799: Build warning in methodData.cpp memset zero-length parameter

[Thomas Stuefe]

Trival clean backport, prevents gcc warnings on Fedora 12 GCC 8.3

The commit being backported was authored by Thomas Stuefe on 7 Jul 2022 and was reviewed by Jie Fu and Lutz Schmidt.

Thanks!

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Commit messages:
 - Backport cce77a700141a854bafaa5ccb33db026affcf322

Changes: https://git.openjdk.org/jdk17u-dev/pull/535/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=535&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8289799
  Stats: 3 lines in 1 file changed: 2 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/535.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev pull/535/head:pull/535

PR: https://git.openjdk.org/jdk17u-dev/pull/535