[jdk11u-dev] RFR: 8314086: A typo in the fix for JDK-8312462 is causing test failure in ChildAlwaysOnTopTest.java

[Taizo Kurashige]

I`d like to fix the bug reported in JDK-8314086.  
`{` is missing in ChildAlwaysOnTopTest.java as suggested in the issue.
This is causing compilation failure in ChildAlwaysOnTopTest.java. 
After fixing this typo, the test successfully passed.

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Commit messages:
 - 8314086: A typo in the fix for JDK-8312462 is causing test failure in ChildAlwaysOnTopTest.java

Changes: https://git.openjdk.org/jdk11u-dev/pull/2074/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=2074&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8314086
  Stats: 1 line in 2 files changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk11u-dev/pull/2074.diff
  Fetch: git fetch https://git.openjdk.org/jdk11u-dev.git pull/2074/head:pull/2074

PR: https://git.openjdk.org/jdk11u-dev/pull/2074