[jdk11u-dev] RFR: 8209736: runtime/RedefineTests/ModifyAnonymous.java fails with NullPointerException when running in CDS mode

[Goetz Lindenmaier]

I backport this for parity with 11.0.17-oracle.

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Commit messages:
 - Backport 3c810ce261980692877a0b043bc67a910902bd26

Changes: https://git.openjdk.java.net/jdk11u-dev/pull/1134/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk11u-dev&pr=1134&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8209736
  Stats: 35 lines in 1 file changed: 33 ins; 0 del; 2 mod
  Patch: https://git.openjdk.java.net/jdk11u-dev/pull/1134.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk11u-dev pull/1134/head:pull/1134

PR: https://git.openjdk.java.net/jdk11u-dev/pull/1134