From a7b7e0ba9b3a06b69706449e29c264dcd67e47e4 Mon Sep 17 00:00:00 2001
From: iceman1001 <iceman@iuse.se>
Date: Fri, 16 Oct 2020 14:02:21 +0200
Subject: [PATCH] fix overflow

---
 client/src/cmdlfem4x.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/client/src/cmdlfem4x.c b/client/src/cmdlfem4x.c
index 1bcd5b244..5e008b369 100644
--- a/client/src/cmdlfem4x.c
+++ b/client/src/cmdlfem4x.c
@@ -1703,6 +1703,9 @@ static void unlock_add_item(em4x05_unlock_item_t *array, uint8_t len, uint32_t v
         }
     }
 
+    if (i >= len ) 
+        return;
+        
     array[i].cnt++;
     array[i].value = value;    
 }