async: client: fix preserved alias

Change-Id: I2a1c168d02b8f3041c15b9ad82d39df74962f800
Signed-off-by: Vlad Sytchenko <vsytch@google.com>
diff --git a/include/sdbusplus/async/client.hpp b/include/sdbusplus/async/client.hpp
index 186ecdc..25bba41 100644
--- a/include/sdbusplus/async/client.hpp
+++ b/include/sdbusplus/async/client.hpp
@@ -84,7 +84,7 @@
  *  the same as the client itself.
  */
 template <template <typename, typename> typename... Types>
-using client_preserved_t = client::client<false, false, false, Types...>;
+using client_preserved_t = client::client<false, false, true, Types...>;
 
 namespace client::details
 {