[jdk21u-dev] RFR: 8340109: Ubsan: ciEnv.cpp:1660:65: runtime error: member call on null pointer of type 'struct CompileTask'

[Matthias Baesken]

8340109: Ubsan: ciEnv.cpp:1660:65: runtime error: member call on null pointer of type 'struct CompileTask'

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Commit messages:
 - Backport efe3573b9b4ecec0630fdc1c61c765713a5b68e6

Changes: https://git.openjdk.org/jdk21u-dev/pull/1056/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=1056&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8340109
  Stats: 4 lines in 1 file changed: 3 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/1056.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/1056/head:pull/1056

PR: https://git.openjdk.org/jdk21u-dev/pull/1056