null check fix
null check fix


git-svn-id: ac804e38dcddf5e42ac850d29d9218b7df6087b7@458102 13f79535-47bb-0310-9956-ffa450edef68

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