RFR (XS): 8234608: [TESTBUG] Memory leak in gc/g1/unloading/libdefine.cpp

[Man Cao]

Hi all,

Could anyone review this small patch contributed by my colleague Ian Rogers
(irogers at google.com)?
Bug: https://bugs.openjdk.java.net/browse/JDK-8234608
Webrev: https://cr.openjdk.java.net/~manc/8234608/webrev.00/

-Man