[WPF] Fix infinite loop in clipboard class
[WPF] Fix infinite loop in clipboard class

hwthomas/xwt,directhex/xwt,steffenWi/xwt,residuum/xwt,cra0zy/xwt,TheBrainTech/xwt,iainx/xwt,hamekoz/xwt,sevoku/xwt,lytico/xwt,akrisiun/xwt,antmicro/xwt,mminns/xwt,mono/xwt,mminns/xwt