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

diff --git a/src/common/crypto.c b/src/common/crypto.c
index dffa2c7807dcf2e99f222b3092f434f176c34ba3..c723c33dd07931b067532bb0ce5d813723a4c2b4 100644 (file)
--- 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;