core+face: avoid deprecated Boost.Asio interfaces

Change-Id: I07ec286531edf63f258babe1561b4da2a88edd10
diff --git a/daemon/face/stream-transport.hpp b/daemon/face/stream-transport.hpp
index c8b0ac3..dcb5265 100644
--- a/daemon/face/stream-transport.hpp
+++ b/daemon/face/stream-transport.hpp
@@ -145,7 +145,7 @@
     // Use the non-throwing variants and ignore errors, if any.
     boost::system::error_code error;
     m_socket.cancel(error);
-    m_socket.shutdown(protocol::socket::shutdown_both, error);
+    m_socket.shutdown(boost::asio::socket_base::shutdown_both, error);
   }
 
   // Ensure that the Transport stays alive at least until