### Describe the issue

bitcoin-qt: Debug pop-up window, Peers tab, right-click ban node for 1 hour, day, week, year does nothing. Disconnect node still works.
### Is the issue reproducible?

Yes.
#### List steps to reproduce below:
1. build master branch after commit https://github.com/bitcoin/bitcoin/commit/6423116741de2144872389cf63a621539ae79aaa
2. launch bitcoin-qt (on testnet is advisable)
3. test ban node list right-click functionality on Menu->Help->Debug pop-up window, Peers tab.

{
            LOCK(cs_vNodes);
            vNodes.push_back(pnode);
        }
        pnode->nServicesExpected = ServiceFlags(addrConnect.nServices & nRelevantServices);
        pnode->nTimeConnected = GetTime();
        return pnode;
    } else if (!proxyConnectionFailed) {
        
        
        addrman.Attempt(addrConnect, fCountFailure);
    }
    return NULL;
}
void CConnman::DumpBanlist()
{
    SweepBanned(); 
    if (!BannedSetIsDirty())
        return;
    int64_t nStart = GetTimeMillis();
    CBanDB bandb;
    banmap_t banmap;
    SetBannedSetDirty(false);
    GetBanned(banmap);
    if (!bandb.Write(banmap))
        SetBannedSetDirty(true);
    LogPrint("net", "Flushed %d banned node ips/subnets to banlist.dat  %dms\n",
        banmap.size(), GetTimeMillis() - nStart);
}
void CNode::CloseSocketDisconnect()