Fix NPE after JBWS-4196 change

WFLYSRV0153: Failed to process phase INSTALL of deployment "jaxws-samples-wsse-policy-username-jaas.war"WFLYSRV0153: Failed to process phase INSTALL of deployment "jaxws-samples-wsse-policy-username-jaas.war" at org.jboss.as.server.deployment.DeploymentUnitPhaseService.start(DeploymentUnitPhaseService.java:189) at org.jboss.msc.service.ServiceControllerImpl$StartTask.startService(ServiceControllerImpl.java:1739) at org.jboss.msc.service.ServiceControllerImpl$StartTask.execute(ServiceControllerImpl.java:1701) at org.jboss.msc.service.ServiceControllerImpl$ControllerTask.run(ServiceControllerImpl.java:1559) at org.jboss.threads.ContextClassLoaderSavingRunnable.run(ContextClassLoaderSavingRunnable.java:35) at org.jboss.threads.EnhancedQueueExecutor.safeRun(EnhancedQueueExecutor.java:1982) at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.doRunTask(EnhancedQueueExecutor.java:1486) at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.run(EnhancedQueueExecutor.java:1377) at java.lang.Thread.run(Thread.java:748)Caused by: java.lang.NullPointerException at org.jboss.ws.common.deployment.EndpointAddressDeploymentAspect.isConfidentialTransportGuarantee(EndpointAddressDeploymentAspect.java:141) at org.jboss.ws.common.deployment.EndpointAddressDeploymentAspect.start(EndpointAddressDeploymentAspect.java:83) at org.jboss.as.webservices.deployers.AspectDeploymentProcessor.deploy(AspectDeploymentProcessor.java:73) at org.jboss.as.server.deployment.DeploymentUnitPhaseService.start(DeploymentUnitPhaseService.java:182) ... 8 more