net: ignore block-relay-only peers when skipping DNS seed

src/net.cpp

@@ -1637,7 +1637,7 @@ void CConnman::ThreadDNSAddressSeed()
                     {
                         LOCK(cs_vNodes);
                         for (const CNode* pnode : vNodes) {
-                            if (pnode->fSuccessfullyConnected && pnode->IsOutboundOrBlockRelayConn()) ++nRelevant;
+                            if (pnode->fSuccessfullyConnected && pnode->IsFullOutboundConn()) ++nRelevant;
                         }
                     }
                     if (nRelevant >= 2) {