[WPF] Fix build
[WPF] Fix build

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