RFR(T) 8184249: SA: clhsdb 'intConstant' throws a NullPointerException when not attached to a VM

[Chris Plummer]

Hello,

Please review the following:
https://bugs.openjdk.java.net/browse/JDK-8184249
http://cr.openjdk.java.net/~cjplummer/8184249/webrev.00/index.html

Details are in the CR. I'd like to consider this fix as trivial, and 
have also added the noreg-trivial label to the CR since there is no test 
case for it.

thanks,

Chris