Ensure CT_POLICY_EVAL_CTX_free behaves properly with a NULL arg

Reviewed-by: Tim Hudson <tjh@openssl.org>

diff --git a/crypto/ct/ct_policy.c b/crypto/ct/ct_policy.c
index 8bc9133fbfa71ae6faf1033a98dcbf7c538ad2c6..33738de103a367f371378c27ef7fd5c9596265d4 100644 (file)
--- a/crypto/ct/ct_policy.c
+++ b/crypto/ct/ct_policy.c
@@ -30,6 +30,8 @@ CT_POLICY_EVAL_CTX *CT_POLICY_EVAL_CTX_new(void)
 
 void CT_POLICY_EVAL_CTX_free(CT_POLICY_EVAL_CTX *ctx)
 {
+    if (ctx == NULL)
+        return;
     X509_free(ctx->cert);
     X509_free(ctx->issuer);
     OPENSSL_free(ctx);