Update copyrights

src/hush/tlsenums.h

@@ -1,8 +1,9 @@
+// Copyright (c) 2019-2020 The Hush developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or https://www.opensource.org/licenses/mit-license.php
+
 namespace hush
 {
-typedef enum { SSL_ACCEPT,
-               SSL_CONNECT,
-               SSL_SHUTDOWN } SSLConnectionRoutine;
-typedef enum { CLIENT_CONTEXT,
-               SERVER_CONTEXT } TLSContextType;
+    typedef enum { SSL_ACCEPT, SSL_CONNECT, SSL_SHUTDOWN } SSLConnectionRoutine;
+    typedef enum { CLIENT_CONTEXT, SERVER_CONTEXT } TLSContextType;
 }