From e269b871510c8939e830beb9bbcfee89589eebe3 Mon Sep 17 00:00:00 2001
From: yr2004 <yr97@foxmail.com>
Date: Tue, 26 Feb 2019 14:52:17 +0800
Subject: [PATCH] option.c: memset the node when a new optlist node is created

memset the node when a new optlist node is created, because the node->next maybe not NULL, so if it creates a new optlist node, and delete it, and then create it again, error will be occurred
---
 src/option.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/option.c b/src/option.c
index 2686e605..84a3127b 100644
--- a/src/option.c
+++ b/src/option.c
@@ -557,6 +557,7 @@ coap_new_optlist(uint16_t number,
   node = coap_malloc_type(COAP_OPTLIST, sizeof(coap_optlist_t) + length);
 
   if (node) {
+    memset(node, 0, (sizeof(coap_optlist_t) + length));
     node->number = number;
     node->length = length;
     node->data = (uint8_t *)&node[1];