buildroot/package/libcoap/0001-coap_oscore-c-Fix-parsing-OSCORE-configuration-information.patch

From 2b28d8b0e9607e71a145345b4fe49517e052b7d9 Mon Sep 17 00:00:00 2001
From: Jon Shallow <supjps-libcoap@jpshallow.com>
Date: Thu, 25 Jan 2024 18:03:17 +0000
Subject: [PATCH] coap_oscore.c: Fix parsing OSCORE configuration information

Upstream: https://github.com/obgm/libcoap/commit/2b28d8b0e9607e71a145345b4fe49517e052b7d9
Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
---
 src/coap_oscore.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/coap_oscore.c b/src/coap_oscore.c
index 83f785c92..e0fb22947 100644
--- a/src/coap_oscore.c
+++ b/src/coap_oscore.c
@@ -1678,11 +1678,12 @@ get_split_entry(const char **start,
                 oscore_value_t *value) {
   const char *begin = *start;
   const char *end;
+  const char *kend;
   const char *split;
   size_t i;
 
 retry:
-  end = memchr(begin, '\n', size);
+  kend = end = memchr(begin, '\n', size);
   if (end == NULL)
     return 0;
 
@@ -1693,7 +1694,7 @@ get_split_entry(const char **start,
 
   if (begin[0] == '#' || (end - begin) == 0) {
     /* Skip comment / blank line */
-    size -= end - begin + 1;
+    size -= kend - begin + 1;
     begin = *start;
     goto retry;
   }