The "really fix cipher none" patch has been merged to release/2.3 and master:

commit 785838614afc20d362b64907b0212e9a779e2287 (release/2.3)
commit 98156e90e1e83133a6a6a020db8e7333ada6156b (master)

diff --git a/src/openvpn/crypto_backend.h b/src/openvpn/crypto_backend.h
index 8749878..4e45df0 100644
--- a/src/openvpn/crypto_backend.h
+++ b/src/openvpn/crypto_backend.h
@@ -237,8 +237,7 @@ int cipher_kt_mode (const cipher_kt_t *cipher_kt);
  *
  * @return		true iff the cipher is a CBC mode cipher.
  */
-bool cipher_kt_mode_cbc(const cipher_kt_t *cipher)
-  __attribute__((nonnull));
+bool cipher_kt_mode_cbc(const cipher_kt_t *cipher);
 
 /**
  * Check if the supplied cipher is a supported OFB or CFB mode cipher.
@@ -247,8 +246,7 @@ bool cipher_kt_mode_cbc(const cipher_kt_t *cipher)
  *
  * @return		true iff the cipher is a OFB or CFB mode cipher.
  */
-bool cipher_kt_mode_ofb_cfb(const cipher_kt_t *cipher)
-  __attribute__((nonnull));
+bool cipher_kt_mode_ofb_cfb(const cipher_kt_t *cipher);
 
 
 /**
diff --git a/tests/t_lpback.sh b/tests/t_lpback.sh
index 8f88ad9..d7792cd 100755
--- a/tests/t_lpback.sh
+++ b/tests/t_lpback.sh
@@ -35,6 +35,9 @@ CIPHERS=$(${top_builddir}/src/openvpn/openvpn --show-ciphers | \
 # GD, 2014-07-06 do not test RC5-* either (fails on NetBSD w/o libcrypto_rc5)
 CIPHERS=$(echo "$CIPHERS" | egrep -v '^(DES-EDE3-CFB1|DES-CFB1|RC5-)' )
 
+# Also test cipher 'none'
+CIPHERS=${CIPHERS}$(printf "\nnone")
+
 "${top_builddir}/src/openvpn/openvpn" --genkey --secret key.$$
 set +e
 
-- 
1.9.1