### Peer is still banned, allthough ban endtime has been reached

Here the log line of the banned peer:

`2017-11-04 16:12:03 Misbehaving: 212.203.47.xxx:61681 peer=56085 (0 -> 100) BAN THRESHOLD EXCEEDED`

In the debug connection window, the peer shows up as banned, with the ban endtime of 2017-11-05 17:12:03 CET, see screenshot (marked blue peer).

Then today, 2017-11-05 around 10 o clock CET, I stopped bitcoind 0.15.0.1, replaced the binaries with 0.15.1rc1 and started bitcoind again.

Now, as the time of the screenshot is 17:40 CET, the ban endtime had been reached, but the peer does still show up as banned.

Edit: Situation unchanged at 20:46 CET.

### Expected behaviour
Peer disappears from the "Banned peers" list, when ban endtime has been reached.

### Actual behaviour
Peer does not disappear from the "Banned peers" list, allthough ban endtime has been reached and exceeded.

### Screenshots.
![bildschirmfoto](https://user-images.githubusercontent.com/8447873/32416947-f2e0129a-c251-11e7-9c92-528f0ff3ae5d.png)

### What version of bitcoin-core are you using?
0.15.0.1 / 0.15.1rc1

### Machine specs:
Linux amd64

{
    return (unsigned short)(gArgs.GetArg("-port", Params().GetDefaultPort()));
}
bool GetLocal(CService& addr, const CNetAddr *paddrPeer)
{
    if (!fListen)
        return false;
    int nBestScore = -1;
    int nBestReachability = -1;
    {
        LOCK(cs_mapLocalHost);
        for (std::map<CNetAddr, LocalServiceInfo>::iterator it = mapLocalHost.begin(); it != mapLocalHost.end(); it++)
        {
            int nScore = (*it).second.nScore;
            int nReachability = (*it).first.GetReachabilityFrom(paddrPeer);
            if (nReachability > nBestReachability || (nReachability == nBestReachability && nScore > nBestScore))
            {
                addr = CService((*it).first, (*it).second.nPort);
                nBestReachability = nReachability;
                nBestScore = nScore;
            }
        }
    }
    return nBestScore >= 0;
}
static std::vector<CAddress> convertSeed6(const std::vector<SeedSpec6> &vSeedsIn)