<AWT Dev> RFR: JDK-8253791: Issue with useAppleColor check in CSystemColors.m

[Matthias Baesken]

While looking into XCode 12 compilation issues, a problem in
jdk/src/java.desktop/macosx/native/libawt_lwawt/awt/CSystemColors.m was found when checking the useAppleColor flag .
Because this is a general issue and not really much related to XCode 12 (just shown when using the new compiler) a
separate issue is filed for it.

See also
https://git.openjdk.java.net/jdk/pull/348
(where Paul Hohensee created a change containing another XCode 12 issue;  but in the discussion it was seen as
beneficial to separate the 2)

Best regards, Matthias

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Commit messages:
 - JDK-8253791

Changes: https://git.openjdk.java.net/jdk/pull/403/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=403&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8253791
  Stats: 2 lines in 1 file changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.java.net/jdk/pull/403.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/403/head:pull/403

PR: https://git.openjdk.java.net/jdk/pull/403