[jdk11u-dev] RFR: 8233570: [TESTBUG] HTMLEditorKit test bug5043626.java is failing on macos

[Christoph Langer]

Backport of JDK-8233570.

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Commit messages:
 - Backport a5b42ec8b29249814dda28e751ee363869e98da0

Changes: https://git.openjdk.java.net/jdk11u-dev/pull/571/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk11u-dev&pr=571&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8233570
  Stats: 39 lines in 2 files changed: 14 ins; 4 del; 21 mod
  Patch: https://git.openjdk.java.net/jdk11u-dev/pull/571.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk11u-dev pull/571/head:pull/571

PR: https://git.openjdk.java.net/jdk11u-dev/pull/571