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

[Dan Lutker]

Disabling warnings for bundled Freetype

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Commit messages:
 - 8300692: GCC 12 reports some compiler warnings in bundled freetype

Changes: https://git.openjdk.org/jdk/pull/12102/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=12102&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/jdk/pull/12102.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/12102/head:pull/12102

PR: https://git.openjdk.org/jdk/pull/12102