session: ssh_handle_packets_termination() SSH_AGAIN bug fix

ssh_handle_packets_termination() must not return SSH_OK when exiting due to
a timeout while the termination function still returns 1.

Signed-off-by: Nicolas Viennot <nicolas@viennot.biz>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>

src/session.c

@@ -547,6 +547,7 @@ int ssh_handle_packets_termination(ssh_session session,
             break;
         }
         if (ssh_timeout_elapsed(&ts,timeout)) {
+            ret = fct(user) ? SSH_OK : SSH_AGAIN;
             break;
         }