Remove unneeded field

Author: tstenner

src/resolver_impl.cpp

@@ -49,11 +49,9 @@ resolver_impl::resolver_impl()
 	// generate the list of protocols to use
 	if (cfg_->allow_ipv6()) {
 		udp_protocols_.push_back(udp::v6());
-		tcp_protocols_.push_back(tcp::v6());
 	}
 	if (cfg_->allow_ipv4()) {
 		udp_protocols_.push_back(udp::v4());
-		tcp_protocols_.push_back(tcp::v4());
 	}
 }
 

src/resolver_impl.h

@@ -149,8 +149,6 @@ class resolver_impl : public cancellable_registry {
 	const api_config *cfg_;
 	/// UDP protocols under consideration
 	std::vector<udp> udp_protocols_;
-	/// TCP protocols under consideration
-	std::vector<tcp> tcp_protocols_;
 	/// the list of multicast endpoints under consideration
 	std::vector<udp::endpoint> mcast_endpoints_;
 	/// the list of per-host UDP endpoints under consideration