Fix win32 build without the "window" feature
Fix win32 build without the "window" feature

mbrubeck/glutin,pcwalton/glutin,akiss77/glutin,vberger/glutin,tempbottle/glutin,mmatyas/glutin,fkaa/glutin,nox/glutin,robertknight/glutin,ecoal95/glutin,tomaka/winit,kornholi/glutin,ozkriff/glutin,bvssvni/glutin,glennw/glutin,servo/glutin,mitchmindtree/glutin,retep998/glutin,notriddle/glutin,frewsxcv/glutin,Jayflux/glutin,mvdnes/glutin,Ms2ger/glutin,adambadawy/glutin,jdm/glutin,mneumann/glutin,mbrubeck/glutin,vvuk/glutin,TyOverby/glutin,larsbergstrom/glutin,TimNN/glutin,aepsil0n/glutin,nc4rrillo/glutin,christopheraugustus/glutin,tomaka/glutin,paulrouget/glutin