tls build fix

source/kelgin/tls.cpp

@@ -3,6 +3,8 @@
 #include <gnutls/gnutls.h>
 #include <gnutls/x509.h>
 
+#include "io_helpers.h"
+
 namespace gin {
 class TlsContext::Impl {
 private:

source/kelgin/tls.h

@@ -22,12 +22,9 @@ public:
 
 class TlsNetwork final : public Network {
 private:
-	Network &network;
 	TlsContext context;
 
 public:
-	TlsContext(Network &);
-
 	Conveyor<Own<NetworkAddress>> parseAddress(const std::string &,
 											   uint16_t port_hint = 0) override;
 };