RFR: 8047187: Test jdk/net/Sockets/Test.java fails to compile after fix JDK-8046588

[Michael McMahon]

This is a simple test case fix for 8u-dev only. Unfortunately, the test case
for 9 was backported in its entirety and makes calls to APIs not 
available in 8.

http://cr.openjdk.java.net/~michaelm/8047187/webrev.1/

Thanks,
Michael.