Tweak how origin is determined

cmd/tclipd/main.go

@@ -482,15 +482,16 @@ WHERE id = $1 AND user_id = $2
 func (s *Server) ShowPost(w http.ResponseWriter, r *http.Request) {
 	ui, _ := upsertUserInfo(r.Context(), s.db, s.lc, r.RemoteAddr)
 	var up *tailcfg.UserProfile
+	origin := "public"
 	if ui != nil {
 		up = ui.UserProfile
+		origin = "tailnet"
 	}
-	origin := "tailnet"
+
 	if valAny := r.Context().Value(privacyKey); valAny != nil {
 		if val, ok := valAny.(mixedCriticalityHandlerCtxKey); ok {
 			if val == isFunnel {
 				up = nil
-				origin = "public"
 			}
 		}
 	}