<Swing Dev> RFR JDK-8188824: sanity/client/SwingSet/src/ProgressBarDemoTest: Failed with NullPointerException

Mon Oct 9 23:14:34 UTC 2017

Please take a quick look on this simple fix.

Webrev: http://cr.openjdk.java.net/~shurailine/8188824/webrev.00/
Bug: https://bugs.openjdk.java.net/browse/JDK-8188824

This fix is a copy of fix made in the Jemmy code-tools repository.
Webrev: http://cr.openjdk.java.net/~shurailine/7902046/webrev.00/
Bug: https://bugs.openjdk.java.net/browse/CODETOOLS-7902046

Thank you.

Shura