[jdk15u-dev] RFR: 8285727: [11u, 17u] Unify fix for JDK-8284920 with version from head

[Yuri Nesterenko]

This is a necessary unification patch.
Version from 17u applies without any difference. Tested so far with regtests of jdk/javax/xml/jaxp, jaxp/javax/xml (together with JDK-8285726 patch).

-------------

Commit messages:
 - 8285727: [11u, 17u] Unify fix for JDK-8284920 with version from head

Changes: https://git.openjdk.java.net/jdk15u-dev/pull/209/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk15u-dev&pr=209&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8285727
  Stats: 132 lines in 4 files changed: 122 ins; 0 del; 10 mod
  Patch: https://git.openjdk.java.net/jdk15u-dev/pull/209.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk15u-dev pull/209/head:pull/209

PR: https://git.openjdk.java.net/jdk15u-dev/pull/209