fixed NPE if getParent() returned null
fixed NPE if getParent() returned null


git-svn-id: ac804e38dcddf5e42ac850d29d9218b7df6087b7@458757 13f79535-47bb-0310-9956-ffa450edef68

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