[CXF-5271] Fix when the CLIENT_CREATED event is fired

git-svn-id: https://svn.apache.org/repos/asf/cxf/trunk@1521953 13f79535-47bb-0310-9956-ffa450edef68
Initialize the class to make sure it and anything it depends on can be found.

git-svn-id: https://svn.apache.org/repos/asf/cxf/trunk@1521954 13f79535-47bb-0310-9956-ffa450edef68