add a missing NULL check

noted by Bill Parker (dogbert2) on github

1 files changed, 5 insertions, 1 deletions

diff --git a/src/usr.bin/openssl/x509.c b/src/usr.bin/openssl/x509.c
index d0a6bcaa00..8699e9eef0 100644
--- a/src/usr.bin/openssl/x509.c
+++ b/src/usr.bin/openssl/x509.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: x509.c,v 1.7 2015/09/21 13:13:06 bcook Exp $ */
+/* $OpenBSD: x509.c,v 1.8 2015/09/21 13:32:55 bcook Exp $ */
 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
  * All rights reserved.
  *
@@ -721,6 +721,10 @@ bad:
 
                                 z = i2d_X509(x, NULL);
                                 m = malloc(z);
+                                if (m == NULL) {
+                                        BIO_printf(bio_err, "out of mem\n");
+                                        goto end;
+                                }
 
                                 d = (unsigned char *) m;
                                 z = i2d_X509_NAME(X509_get_subject_name(x), &d);