Allow *_free() functions in libssl to handle NULL input.

This mimics free()'s behavior which makes error handling simpler.

ok bcook@ miod@

1 files changed, 4 insertions, 1 deletions

diff --git a/src/lib/libssl/ssl_lib.c b/src/lib/libssl/ssl_lib.c
index 1dd518d0b8..629ad03554 100644
--- a/src/lib/libssl/ssl_lib.c
+++ b/src/lib/libssl/ssl_lib.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: ssl_lib.c,v 1.104 2015/06/28 00:08:27 doug Exp $ */
+/* $OpenBSD: ssl_lib.c,v 1.105 2015/07/19 20:32:18 doug Exp $ */
 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
  * All rights reserved.
  *
@@ -2825,6 +2825,9 @@ ssl_init_wbio_buffer(SSL *s, int push)
 void
 ssl_free_wbio_buffer(SSL *s)
 {
+        if (s == NULL)
+                return;
+
         if (s->bbio == NULL)
                 return;