From a15b4851d4945225c53bc4ef5d303cdcc51af053 Mon Sep 17 00:00:00 2001
From: correy <112426112@qq.com>
Date: Thu, 21 Sep 2023 16:19:11 +0800
Subject: [PATCH] Fix MSVC error C4703 about possibly uninitialized variable in
 pkwrite.c

Signed-off-by: correy <112426112@qq.com>
---
 library/pkwrite.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/library/pkwrite.c b/library/pkwrite.c
index eee64ab17..a2b3e63f0 100644
--- a/library/pkwrite.c
+++ b/library/pkwrite.c
@@ -379,7 +379,7 @@ int mbedtls_pk_write_pubkey_der(const mbedtls_pk_context *key, unsigned char *bu
 #if defined(MBEDTLS_PK_HAVE_ECC_KEYS)
     mbedtls_ecp_group_id ec_grp_id = MBEDTLS_ECP_DP_NONE;
 #endif
-    const char *oid;
+    const char *oid = NULL;
 
     if (size == 0) {
         return MBEDTLS_ERR_ASN1_BUF_TOO_SMALL;