RFR: 8155888: java/net/httpclient/QuickResponses.java intermittently failed with java.util.ConcurrentModificationException

[Michael McMahon]

Another occasional test case failure. It's a concurrent modification 
exception caused
by modifying a list during processing of the list (by the same thread). 
The solution
is to keep separate lists of the modifications and to process them after 
the iterator
completes.

http://cr.openjdk.java.net/~michaelm/8155888/webrev.1/
Thanks
Michael