Add a flags field to mbedtls_ssl_context

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
diff --git a/library/ssl_tls.c b/library/ssl_tls.c
index 60f2e1c..4744db3 100644
--- a/library/ssl_tls.c
+++ b/library/ssl_tls.c
@@ -1411,6 +1411,7 @@
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
 
     ssl->state = MBEDTLS_SSL_HELLO_REQUEST;
+    ssl->flags = 0;
     ssl->tls_version = ssl->conf->max_tls_version;
 
     mbedtls_ssl_session_reset_msg_layer(ssl, partial);