From 915c73bcfc9dcd74997d999529e450216d2633f8 Mon Sep 17 00:00:00 2001
From: merlokk <807634+merlokk@users.noreply.github.com>
Date: Wed, 20 Feb 2019 14:48:52 +0200
Subject: [PATCH] fix possible error

---
 client/emv/tlv.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/client/emv/tlv.c b/client/emv/tlv.c
index 0daedaf47..31b5ea360 100644
--- a/client/emv/tlv.c
+++ b/client/emv/tlv.c
@@ -353,6 +353,9 @@ struct tlvdb *tlvdb_find_path(struct tlvdb *tlvdb, tlv_tag_t tag[]) {
 void tlvdb_add(struct tlvdb *tlvdb, struct tlvdb *other)
 {
 	while (tlvdb->next) {
+		if (tlvdb->next == other)
+			return;
+		
 		tlvdb = tlvdb->next;
 	}