Avoid NULL deref on BIO_new{_mem_buf,}() failure.

diff --git a/regress/lib/libssl/server/servertest.c b/regress/lib/libssl/server/servertest.c
index d6f2039..a71c5f8 100644 (file)
--- a/regress/lib/libssl/server/servertest.c
+++ b/regress/lib/libssl/server/servertest.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: servertest.c,v 1.4 2020/10/11 02:30:04 jsing Exp $ */
+/* $OpenBSD: servertest.c,v 1.5 2021/01/22 15:56:17 tb Exp $ */
 /*
  * Copyright (c) 2015, 2016, 2017 Joel Sing <jsing@openbsd.org>
  *
@@ -159,7 +159,7 @@ server_hello_test(int testno, struct server_hello_test *sht)
        wbio->references = 2;
 
        SSL_set_bio(ssl, rbio, wbio);
-       
+
        if (SSL_accept(ssl) != 0) {
                fprintf(stderr, "SSL_accept() returned non-zero\n");
                ERR_print_errors_fp(stderr);
@@ -172,8 +172,10 @@ server_hello_test(int testno, struct server_hello_test *sht)
        SSL_CTX_free(ssl_ctx);
        SSL_free(ssl);
 
-       rbio->references = 1;
-       wbio->references = 1;
+       if (rbio != NULL)
+               rbio->references = 1;
+       if (wbio != NULL)
+               wbio->references = 1;
 
        BIO_free(rbio);
        BIO_free(wbio);