From 844c34303ed330cbedab05a1bbe0b0337940b6e9 Mon Sep 17 00:00:00 2001
From: merlokk <807634+merlokk@users.noreply.github.com>
Date: Wed, 20 Feb 2019 15:18:35 +0200
Subject: [PATCH] fix rare bug in tlv.c

---
 client/emv/tlv.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/client/emv/tlv.c b/client/emv/tlv.c
index 9722c931..05de928e 100644
--- a/client/emv/tlv.c
+++ b/client/emv/tlv.c
@@ -352,7 +352,13 @@ struct tlvdb *tlvdb_find_path(struct tlvdb *tlvdb, tlv_tag_t tag[]) {
 
 void tlvdb_add(struct tlvdb *tlvdb, struct tlvdb *other)
 {
+	if (tlvdb == other)
+		return;
+	
 	while (tlvdb->next) {
+		if (tlvdb->next == other)
+			return;
+		
 		tlvdb = tlvdb->next;
 	}