BUG/MINOR: payload: Add volatile flag to smp_fetch_req_ssl_ec_ext

This bug was introduced in 5fc7d7e. No backport to 1.5 needed.

Signed-off-by: Nenad Merdanovic <nmerdan@anine.io>
diff --git a/src/payload.c b/src/payload.c
index 78f5608..852727a 100644
--- a/src/payload.c
+++ b/src/payload.c
@@ -161,6 +161,7 @@
 		if (ext_type == 10) {
 			smp->type = SMP_T_BOOL;
 			smp->data.uint = 1;
+			smp->flags = SMP_F_VOLATILE;
 			return 1;
 		}