From a63ce2f5b98c21a2763c9d96105793a6aa3c4ce3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Mat=C4=9Bj=20Cepl?= <mcepl@cepl.eu>
Date: Wed, 29 Jan 2020 22:32:28 +0100
Subject: Add correct generated files

---
 SWIG/_m2crypto_wrap.c | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/SWIG/_m2crypto_wrap.c b/SWIG/_m2crypto_wrap.c
index 837ce6c..ff75af5 100644
--- a/SWIG/_m2crypto_wrap.c
+++ b/SWIG/_m2crypto_wrap.c
@@ -6085,8 +6085,17 @@ PyObject *cipher_init(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
     const void *kbuf, *ibuf;
     Py_ssize_t klen, ilen;
 
-    if ((PyObject_AsReadBuffer(key, &kbuf, &klen) == -1)
-        || (PyObject_AsReadBuffer(iv, &ibuf, &ilen) == -1))
+    if (cipher == Py_None)
+        cipher = NULL;
+
+    if (key == Py_None)
+        kbuf = NULL;
+    else if (PyObject_AsReadBuffer(key, &kbuf, &klen) == -1)
+        return NULL;
+
+    if (iv == Py_None)
+        ibuf = NULL;
+    else if (PyObject_AsReadBuffer(iv, &ibuf, &ilen) == -1)
         return NULL;
 
     if (!EVP_CipherInit(ctx, cipher, (unsigned char *)kbuf,
-- 
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