NullPointerExceptions in log files when JPP 6 is accessed before fully started

Issue

• JPP throws NPE if a client tries to access /portal context during server startup. The NPEs occur after the server logs "Registering web context: /portal" until the portal EAR is completely deployed.

ERROR [org.exoplatform.services.organization.idm.PicketLinkIDMOrganizationServiceImpl] (http-/127.0.0.1:8080-1) null: java.lang.NullPointerException
    at org.exoplatform.services.organization.idm.PicketLinkIDMServiceImpl.getIdentitySession(PicketLinkIDMServiceImpl.java:201) [exo.portal.component.identity-3.5.2.Final-redhat-4.jar:3.5.2.Final-redhat-4]
    at org.exoplatform.services.organization.idm.PicketLinkIDMOrganizationServiceImpl.startRequest(PicketLinkIDMOrganizationServiceImpl.java:139) [exo.portal.component.identity-3.5.2.Final-redhat-4.jar:3.5.2.Final-redhat-4]
    at org.exoplatform.container.component.RequestLifeCycle.doBegin(RequestLifeCycle.java:57) [exo.kernel.container-2.4.1-GA-redhat-1.jar:2.4.1-GA-redhat-1]
    at org.exoplatform.container.component.RequestLifeCycleStack.begin(RequestLifeCycleStack.java:94) [exo.kernel.container-2.4.1-GA-redhat-1.jar:2.4.1-GA-redhat-1]
    at org.exoplatform.container.component.RequestLifeCycle.begin(RequestLifeCycle.java:107) [exo.kernel.container-2.4.1-GA-redhat-1.jar:2.4.1-GA-redhat-1]
    at org.exoplatform.container.component.RequestLifeCycle.begin(RequestLifeCycle.java:141) [exo.kernel.container-2.4.1-GA-redhat-1.jar:2.4.1-GA-redhat-1]
    at org.exoplatform.web.WebAppController.service(WebAppController.java:320) [exo.portal.component.web.controller-3.5.2.Final-redhat-4.jar:3.5.2.Final-redhat-4]
    at org.exoplatform.portal.application.PortalController.onService(PortalController.java:108) [exo.portal.webui.portal-3.5.2.Final-redhat-4.jar:3.5.2.Final-redhat-4]
    at org.exoplatform.container.web.AbstractHttpServlet.service(AbstractHttpServlet.java:132) [exo.kernel.container-2.4.1-GA-redhat-1.jar:2.4.1-GA-redhat-1]

2016-03-23 12:53:38,221 ERROR [org.apache.catalina.core.ContainerBase.[jboss.web].[default-host].[/tip].[portal]] (http-/0.0.0.0:8181-1) JBWEB000236: Servlet.service() for servlet portal threw exception: java.lang.NullPointerException
        at org.exoplatform.portal.application.PortalRequestContext.getUserPortalConfig(PortalRequestContext.java:268) [exo.portal.webui.portal-3.6.5.Final-redhat-1.jar:3.6.5.Final-redhat-1]
        at org.exoplatform.portal.application.PortalRequestHandler.execute(PortalRequestHandler.java:156) [exo.portal.webui.portal-3.6.5.Final-redhat-1.jar:3.6.5.Final-redhat-1]
        at org.exoplatform.web.WebAppController.service(WebAppController.java:340) [exo.portal.component.web.controller-3.6.5.Final-redhat-1.jar:3.6.5.Final-redhat-1]
        at org.exoplatform.portal.application.PortalController.onService(PortalController.java:110) [exo.portal.webui.portal-3.6.5.Final-redhat-1.jar:3.6.5.Final-redhat-1]
        at org.exoplatform.container.web.AbstractHttpServlet.service(AbstractHttpServlet.java:132) [exo.kernel.container-2.4.7-GA-redhat-1.jar:2.4.7-GA-redhat-1]
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