[jdk20u] RFR: 8300692: GCC 12 reports some compiler warnings in bundled freetype

[Matthias Baesken]

8300692: GCC 12 reports some compiler warnings in bundled freetype

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Commit messages:
 - Backport a6c2a2ae79be6810dca55b13bfc8a7625f25d48d

Changes: https://git.openjdk.org/jdk20u/pull/19/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk20u&pr=19&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8300692
  Stats: 1 line in 1 file changed: 1 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk20u/pull/19.diff
  Fetch: git fetch https://git.openjdk.org/jdk20u pull/19/head:pull/19

PR: https://git.openjdk.org/jdk20u/pull/19