[15] RFR(XS): 8247730: 2 JNI exception pending defect groups in DwarfParser.cpp

[Chris Plummer]

Hello,

Please review the following:
https://bugs.openjdk.java.net/browse/JDK-8247730
http://cr.openjdk.java.net/~cjplummer/8247730/webrev.00/

There are two locations were we make a JNI call with the possibility of 
a pending exception. This is new code in JDK 15, so it is being 
addressed there.

thanks,

Chris