Fixed NullPointerException in WicketFilter backport
Fixed NullPointerException in WicketFilter backport

git-svn-id: 6d6ade8e88b1292e17cba3559b7335a947e495e0@479814 13f79535-47bb-0310-9956-ffa450edef68

AlienQueen/wicket,mafulafunk/wicket,selckin/wicket,selckin/wicket,mosoft521/wicket,astrapi69/wicket,aldaris/wicket,zwsong/wicket,klopfdreh/wicket,klopfdreh/wicket,mosoft521/wicket,zwsong/wicket,topicusonderwijs/wicket,aldaris/wicket,topicusonderwijs/wicket,selckin/wicket,apache/wicket,zwsong/wicket,freiheit-com/wicket,bitstorm/wicket,aldaris/wicket,Servoy/wicket,astrapi69/wicket,selckin/wicket,dashorst/wicket,topicusonderwijs/wicket,AlienQueen/wicket,klopfdreh/wicket,mafulafunk/wicket,bitstorm/wicket,bitstorm/wicket,mosoft521/wicket,AlienQueen/wicket,martin-g/wicket-osgi,apache/wicket,dashorst/wicket,AlienQueen/wicket,freiheit-com/wicket,Servoy/wicket,freiheit-com/wicket,dashorst/wicket,apache/wicket,bitstorm/wicket,dashorst/wicket,AlienQueen/wicket,aldaris/wicket,freiheit-com/wicket,zwsong/wicket,selckin/wicket,martin-g/wicket-osgi,apache/wicket,bitstorm/wicket,topicusonderwijs/wicket,dashorst/wicket,mafulafunk/wicket,Servoy/wicket,mosoft521/wicket,martin-g/wicket-osgi,apache/wicket,aldaris/wicket,klopfdreh/wicket,topicusonderwijs/wicket,Servoy/wicket,freiheit-com/wicket,astrapi69/wicket,astrapi69/wicket,mosoft521/wicket,klopfdreh/wicket,Servoy/wicket