Make X509_CRL_METHOD_free() NULL-safe.

ok bcook

1 files changed, 2 insertions, 2 deletions

diff --git a/src/lib/libcrypto/asn1/x_crl.c b/src/lib/libcrypto/asn1/x_crl.c
index e0e6cc8863..9ab37c3548 100644
--- a/src/lib/libcrypto/asn1/x_crl.c
+++ b/src/lib/libcrypto/asn1/x_crl.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: x_crl.c,v 1.30 2018/03/17 14:33:20 jsing Exp $ */
+/* $OpenBSD: x_crl.c,v 1.31 2018/04/23 09:00:19 tb Exp $ */
 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
  * All rights reserved.
  *
@@ -675,7 +675,7 @@ X509_CRL_METHOD_new(int (*crl_init)(X509_CRL *crl),
 void
 X509_CRL_METHOD_free(X509_CRL_METHOD *m)
 {
-        if (!(m->flags & X509_CRL_METHOD_DYNAMIC))
+        if (m == NULL || !(m->flags & X509_CRL_METHOD_DYNAMIC))
                 return;
         free(m);
 }