Clear the child pointer in CBB_cleanup(), so that we have fewer pointers

hanging around to potentially invalid address space.

Discussed with beck@ and doug@

1 files changed, 2 insertions, 1 deletions

diff --git a/src/lib/libssl/bs_cbb.c b/src/lib/libssl/bs_cbb.c
index dd1dc73d09..9de75fbb02 100644
--- a/src/lib/libssl/bs_cbb.c
+++ b/src/lib/libssl/bs_cbb.c
@@ -1,4 +1,4 @@
-/*      $OpenBSD: bs_cbb.c,v 1.16 2017/05/07 05:03:41 jsing Exp $       */
+/*      $OpenBSD: bs_cbb.c,v 1.17 2017/08/12 02:50:05 jsing Exp $       */
 /*
  * Copyright (c) 2014, Google Inc.
  *
@@ -87,6 +87,7 @@ CBB_cleanup(CBB *cbb)
                 free(cbb->base);
         }
         cbb->base = NULL;
+        cbb->child = NULL;
 }
 
 static int