[jdk11u-dev] RFR: 8226878: zero crashes after JDK-8191278

[Sergey Nazarkin]

This is follow up for 8191278 that fixes crash of zero builds. Applies cleanly.

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Depends on: https://git.openjdk.java.net/jdk11u-dev/pull/173

Commit messages:
 - Backport 302b8d06ce595b6071d728f6ab10dde561dcd54b

Changes: https://git.openjdk.java.net/jdk11u-dev/pull/192/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk11u-dev&pr=192&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8226878
  Stats: 5 lines in 1 file changed: 3 ins; 1 del; 1 mod
  Patch: https://git.openjdk.java.net/jdk11u-dev/pull/192.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk11u-dev pull/192/head:pull/192

PR: https://git.openjdk.java.net/jdk11u-dev/pull/192