CXFHandlerResolverImpl initializes handlers at each getHandlerChain() invocation

org.jboss.wsf.stack.cxf.client.serviceref.CXFHandlerResolverImpl#getHandlerChain(PortInfo portInfo) uses a map to avoid building the handler chain multiple time for a given port info. However it performs initialization / injection on the handlers at each invocation. Moreover, the access to the map is not thread-safe.