unescapte url for host in auth_old endpoint

main.go

@@ -107,7 +107,8 @@ func main() {
 			}
 			state := string([]byte(pageState[0:splitIndex]))
 			host := string([]byte(pageState[splitIndex+1:len(pageState)]))
-
+			host = url.QueryUnescape(host)
+			
 			redir := host + "?code=" + pageCode + "&state="+ state +"&usage_point_id=" + pageUsage
 			fmt.Println(time.Now().Format("2006-01-02 15:04:05"), "- Redirect to -", redir)
 			http.Redirect(w, r, redir, 302)