From: Dr. Stephen Henson <steve@openssl.org>
Date: Fri, 20 Dec 2013 15:12:26 +0000 (+0000)
Subject: Ignore NULL parameter in EVP_MD_CTX_destroy.
X-Git-Tag: OpenSSL_1_0_2-beta1~119
X-Git-Url: https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff_plain;h=ff64ab32aef676020abb1097c2ca17cef106b9de

Ignore NULL parameter in EVP_MD_CTX_destroy.
(cherry picked from commit a6c62f0c25a756c263a80ce52afbae888028e986)
---

diff --git a/crypto/evp/digest.c b/crypto/evp/digest.c
index cfd5401dbd..87317572fe 100644
--- a/crypto/evp/digest.c
+++ b/crypto/evp/digest.c
@@ -379,8 +379,11 @@ int EVP_Digest(const void *data, size_t count,
 
 void EVP_MD_CTX_destroy(EVP_MD_CTX *ctx)
 	{
-	EVP_MD_CTX_cleanup(ctx);
-	OPENSSL_free(ctx);
+	if (ctx)
+		{
+		EVP_MD_CTX_cleanup(ctx);
+		OPENSSL_free(ctx);
+		}
 	}
 
 /* This call frees resources associated with the context */