RFR: 8324800: gcc windows build broken after 8322757

[Julian Waters]

JDK-8322757 enabled -Wparentheses warnings for HotSpot, but couldn't find several instances of those warnings in Windows code. As a result the gcc windows build is now broken. Address the parentheses warning in the code to resolve the build failure

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Commit messages:
 - 8324800

Changes: https://git.openjdk.org/jdk/pull/17605/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=17605&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8324800
  Stats: 2 lines in 1 file changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/17605.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/17605/head:pull/17605

PR: https://git.openjdk.org/jdk/pull/17605