[jdk11u-dev] RFR: 8289569: [test] java/lang/ProcessBuilder/Basic.java fails on Alpine/musl

[Joshua Cao]

Not a clean backport since surrounding lines are different, but changes are simple enough. This change passes ProcessBuilder/Basic.java jtreg test on our Alpine systems.

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Commit messages:
 - 8289569: [test] java/lang/ProcessBuilder/Basic.java fails on Alpine/musl

Changes: https://git.openjdk.org/jdk11u-dev/pull/1324/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=1324&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8289569
  Stats: 2 lines in 1 file changed: 1 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk11u-dev/pull/1324.diff
  Fetch: git fetch https://git.openjdk.org/jdk11u-dev pull/1324/head:pull/1324

PR: https://git.openjdk.org/jdk11u-dev/pull/1324