I was messing around with min relay policies and found that under certain circumstances the mempool will accept things, then not relay to any peers.

Example made using wallet:
Transaction of size 6195, fee of 619 satoshis, minrelay of 100 satoshis per kvB. Mempool logic allows it:

```
        // No transactions are allowed below minRelayTxFee except from disconnected blocks
        if (!bypass_limits && nModifiedFees < ::minRelayTxFee.GetFee(nSize)) {
            return state.DoS(0, false, REJECT_INSUFFICIENTFEE, "min relay fee not met", false, strprintf("%d < %d", nModifiedFees, ::minRelayTxFee.GetFee(nSize)));
        }
```
and lets it into mempool

but in net_processing.cpp:

```
                    if (filterrate && txinfo.feeRate.GetFeePerK() < filterrate) {
                        continue;
                    }
```
this gets hit because the computed feerate is insufficient(printing I added):
```
0.00000099 BTC/kB
```

I'm not super at arithmetic so I'm opening this up in case someone has an easy fix. 

let me also get a reproducible test failure with this...
vRecv >> filter;
        if (!filter.IsWithinSizeConstraints())
        {
            
            LOCK(cs_main);
            Misbehaving(pfrom->GetId(), 100);
        }
        else if (pfrom->m_tx_relay != nullptr)
        {
            LOCK(pfrom->m_tx_relay->cs_filter);
            pfrom->m_tx_relay->pfilter.reset(new CBloomFilter(filter));
            pfrom->m_tx_relay->pfilter->UpdateEmptyFull();
            pfrom->m_tx_relay->fRelayTxes = true;
        }
        return true;
    }
    if (strCommand == NetMsgType::FILTERADD) {
        std::vector<unsigned char> vData;
        vRecv >> vData;
        
        
        bool bad = false;
        if (vData.size() > MAX_SCRIPT_ELEMENT_SIZE) {
            bad = true;
        } else if (pfrom->m_tx_relay != nullptr) {
            LOCK(pfrom->m_tx_relay->cs_filter);
            if (pfrom->m_tx_relay->pfilter) {
                pfrom->m_tx_relay->pfilter->insert(vData);
            } else {
                bad = true;