p2p: Forget peer's reconciliation state on disconnect

src/net_processing.cpp

@@ -1494,6 +1494,7 @@ void PeerManagerImpl::FinalizeNode(const CNode& node)
     }
     WITH_LOCK(g_cs_orphans, m_orphanage.EraseForPeer(nodeid));
     m_txrequest.DisconnectedPeer(nodeid);
+    if (m_txreconciliation) m_txreconciliation->ForgetPeer(nodeid);
     m_num_preferred_download_peers -= state->fPreferredDownload;
     m_peers_downloading_from -= (state->nBlocksInFlight != 0);
     assert(m_peers_downloading_from >= 0);