test: parallel/test-zlib-failed-init, intermittent crash

* **Version**: master
* **Platform**: Windows, debian8
* **Subsystem**: zlib

Crash in run for unrelated PR
https://ci.nodejs.org/job/node-test-binary-windows/9757/RUN_SUBSET=1,VS_VERSION=vs2015,label=win2012r2/console
```
not ok 358 parallel/test-zlib-failed-init
  ---
  duration_ms: 0.806
  severity: crashed
  stack: |-
    oh no!
    exit code: CRASHED
  ...
```
