RequestCorrelator broadcasts message instead of sending an unicast

The first message sent has the destination field initialized with null. In result, the first message is broadcasted. The destination must be set.

In here: https://github.com/belaban/JGroups/blob/master/src/org/jgroups/blocks/RequestCorrelator.java#L161

Code:
Message copy=(first? msg : msg.copy(true)).dest(mbr);

Possible fix:
Message copy=(first? msg.dest(mbr) : msg.copy(true)).dest(mbr);