tls: no closed notify if no app session

Type: fix

Signed-off-by: Florin Coras <fcoras@cisco.com>
Change-Id: I0e58bb970d371818217390d451cf26925b04970f
diff --git a/src/vnet/tls/tls.c b/src/vnet/tls/tls.c
index 1364a4f..6882f80 100644
--- a/src/vnet/tls/tls.c
+++ b/src/vnet/tls/tls.c
@@ -749,7 +749,8 @@
   tls_ctx_t *ctx;
 
   ctx = tls_ctx_get_w_thread (ts->opaque, ts->thread_index);
-  session_transport_closed_notify (&ctx->connection);
+  if (!ctx->no_app_session)
+    session_transport_closed_notify (&ctx->connection);
 }
 
 static session_cb_vft_t tls_app_cb_vft = {