[p2p] don't log tx invs when in IBD

These invs are ignored anyway, and this allows us to more easily move
the inv handling to TxDownloadManager in the next commit.

src/net_processing.cpp

@@ -4130,13 +4130,15 @@ void PeerManagerImpl::ProcessMessage(CNode& pfrom, const std::string& msg_type,
                     return;
                 }
                 const GenTxid gtxid = ToGenTxid(inv);
+                AddKnownTx(*peer, inv.hash);
+
+                if (!m_chainman.IsInitialBlockDownload()) {
                     const bool fAlreadyHave = m_txdownloadman.AlreadyHaveTx(gtxid, /*include_reconsiderable=*/true);
                     LogDebug(BCLog::NET, "got inv: %s  %s peer=%d\n", inv.ToString(), fAlreadyHave ? "have" : "new", pfrom.GetId());
-
-                AddKnownTx(*peer, inv.hash);
-                if (!fAlreadyHave && !m_chainman.IsInitialBlockDownload()) {
+                    if (!fAlreadyHave) {
                         AddTxAnnouncement(pfrom, gtxid, current_time);
                     }
+                }
             } else {
                 LogDebug(BCLog::NET, "Unknown inv type \"%s\" received from peer=%d\n", inv.ToString(), pfrom.GetId());
             }