From c4ec5d7da4b40b4da760669d2b374e9c92742f7b Mon Sep 17 00:00:00 2001
From: jsing <jsing@openbsd.org>
Date: Wed, 7 Feb 2018 08:57:25 +0000
Subject: [PATCH] Restore a check before BN_free() that needs to exist and
 write it such that the intent is more obvious.

---
 usr.bin/openssl/apps.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/usr.bin/openssl/apps.c b/usr.bin/openssl/apps.c
index 22b6b2838bf..90baf65a9f5 100644
--- a/usr.bin/openssl/apps.c
+++ b/usr.bin/openssl/apps.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: apps.c,v 1.46 2018/02/07 05:47:55 jsing Exp $ */
+/* $OpenBSD: apps.c,v 1.47 2018/02/07 08:57:25 jsing Exp $ */
 /*
  * Copyright (c) 2014 Joel Sing <jsing@openbsd.org>
  *
@@ -1425,7 +1425,8 @@ rand_serial(BIGNUM *b, ASN1_INTEGER *ai)
 	ret = 1;
 
  error:
-	BN_free(btmp);
+	if (b != btmp)
+		BN_free(btmp);
 
 	return ret;
 }
-- 
2.20.1