[JDK 13] RFR 8178335: fake pass: jdk/internal/ref/Cleaner/ExitOnThrow.java

[Amy Lu]

Please review the patch to fix a fake passed test:

jdk/internal/ref/Cleaner/ExitOnThrow.java

It expects the target test program exists with '1', and throws an 
exception. Due to the target test program be wrongly forked (missed 
--add-exports ), it exists with '1' but with unexpected 
java.lang.IllegalAccessError.

bug: https://bugs.openjdk.java.net/browse/JDK-8178335
webrev: http://cr.openjdk.java.net/~amlu/8178335/webrev.00

Thanks,
Amy