only request focused window if application is not null
only request focused window if application is not null

koekeishiya/kwm,a-morales/kwm,koekeishiya/kwm,akdor1154/kwm,cHoco/kwm,cHoco/kwm,a-morales/kwm,cHoco/kwm,akdor1154/kwm,akdor1154/kwm,koekeishiya/kwm,a-morales/kwm