From: Nick Mathewson <nickm@torproject.org>
Date: Sat, 13 Nov 2010 01:21:50 +0000 (-0500)
Subject: Make crypto_free_pk_env tolerate NULL arg in 0.2.1.  Error-proofing against bug 988... 
X-Git-Tag: tor-0.2.1.31~7^2~9
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=299a78c5fed3447a450cea3d4f686c2140c7aaed;p=thirdparty%2Ftor.git

Make crypto_free_pk_env tolerate NULL arg in 0.2.1.  Error-proofing against bug 988 backport
---

diff --git a/src/common/crypto.c b/src/common/crypto.c
index dffa2c7807..c723c33dd0 100644
--- a/src/common/crypto.c
+++ b/src/common/crypto.c
@@ -321,7 +321,8 @@ crypto_new_pk_env(void)
 void
 crypto_free_pk_env(crypto_pk_env_t *env)
 {
-  tor_assert(env);
+  if (!env)
+    return;
 
   if (--env->refs > 0)
     return;