Using a Bitcoin-Qt v0.16.0 ([downloaded from bitcoin page](https://bitcoin.org/bin/bitcoin-core-0.16.0/bitcoin-0.16.0-osx.dmg)) in an macOS High Sierra 10.13.4 

When I start after a fresh install Bitcoin-Qt as a mainnet node and wallet, the wallet prompt that about 203gb is going to be used in my disk
![image](https://user-images.githubusercontent.com/20187136/39899688-ba820bfe-5493-11e8-87d9-460ed5716a02.png)

When I start the node and wallet as testnet, shows the same message about the 203gb disk usage
![image](https://user-images.githubusercontent.com/20187136/39899756-17b31214-5494-11e8-8a57-60e604e74afb.png)

It seems that the second time the message is wrong, due that the testnet database uses about 14gb.
#ifndef BITCOIN_INTERFACES_NODE_H
#define BITCOIN_INTERFACES_NODE_H
#include <addrdb.h>     
#include <amount.h>     
#include <net.h>        
#include <netaddress.h> 
#include <functional>
#include <memory>
#include <stddef.h>
#include <stdint.h>
#include <string>
#include <tuple>
#include <vector>
class CCoinControl;
class CFeeRate;