From f3cfa33b07b0ebac1b894717db81cc1b394a7bd8 Mon Sep 17 00:00:00 2001
From: esdeathlove <esdeathlove@gmail.com>
Date: Tue, 1 Aug 2017 16:16:32 +0800
Subject: [PATCH] refine

---
 shadowsocks/crypto/openssl.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/shadowsocks/crypto/openssl.py b/shadowsocks/crypto/openssl.py
index c9245d5..f034bd1 100644
--- a/shadowsocks/crypto/openssl.py
+++ b/shadowsocks/crypto/openssl.py
@@ -139,6 +139,7 @@ class OpenSSLCryptoBase(object):
         if self._ctx:
             ctx_cleanup(self._ctx)
             libcrypto.EVP_CIPHER_CTX_free(self._ctx)
+            self._ctx = None
 
 
 class OpenSSLAeadCrypto(OpenSSLCryptoBase, AeadCryptoBase):