RFR (XXS): 8137020: [TESTBUG] Utils.runAndCheckException doesn't work well if no exception thrown

[Kirill Zhaldybin]

Hi!

Could you please review a small fix for JDK-8137020?
I changed handling a case when expected exception wasn't thrown.

CR: https://bugs.openjdk.java.net/browse/JDK-8137020
Webrev:
hotspot: http://cr.openjdk.java.net/~kzhaldyb/webrevs/JDK-8137020/webrev.00/

Thank you.

Regards, Kirill