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.
{
        return MakeHandler(::uiInterface.NotifyAlertChanged_connect(fn));
    }
    std::unique_ptr<Handler> handleBannedListChanged(BannedListChangedFn fn) override
    {
        return MakeHandler(::uiInterface.BannedListChanged_connect(fn));
    }
    std::unique_ptr<Handler> handleNotifyBlockTip(NotifyBlockTipFn fn) override
    {
        return MakeHandler(::uiInterface.NotifyBlockTip_connect([fn](bool initial_download, const CBlockIndex* block) {
            fn(initial_download, block->nHeight, block->GetBlockTime(),
                GuessVerificationProgress(Params().TxData(), block));
        }));
    }
    std::unique_ptr<Handler> handleNotifyHeaderTip(NotifyHeaderTipFn fn) override
    {
        return MakeHandler(
            ::uiInterface.NotifyHeaderTip_connect([fn](bool initial_download, const CBlockIndex* block) {
                fn(initial_download, block->nHeight, block->GetBlockTime(),
                    GuessVerificationProgress(Params().TxData(), block));
            }));
    }
};
} 
std::unique_ptr<Node> MakeNode() { return MakeUnique<NodeImpl>(); }
}