net_processing: drop AddOrphanTx

All the interesting functionality of AddOrphanTx is already in other
functions, so call those functions directly in the one place that
AddOrphanTx was used.

src/net_processing.cpp

@@ -1096,17 +1096,6 @@ static void AddToCompactExtraTransactions(const CTransactionRef& tx) EXCLUSIVE_L
     vExtraTxnForCompactIt = (vExtraTxnForCompactIt + 1) % max_extra_txn;
 }
 
-bool AddOrphanTx(const CTransactionRef& tx, NodeId peer) EXCLUSIVE_LOCKS_REQUIRED(g_cs_orphans)
-{
-    if (!OrphanageAddTx(tx, peer)) {
-        return false;
-    }
-
-    AddToCompactExtraTransactions(tx);
-
-    return true;
-}
-
 void PeerManagerImpl::Misbehaving(const NodeId pnode, const int howmuch, const std::string& message)
 {
     assert(howmuch > 0);
@@ -3156,7 +3145,10 @@ void PeerManagerImpl::ProcessMessage(CNode& pfrom, const std::string& msg_type,
                     pfrom.AddKnownTx(parent_txid);
                     if (!AlreadyHaveTx(gtxid)) AddTxAnnouncement(pfrom, gtxid, current_time);
                 }
-                AddOrphanTx(ptx, pfrom.GetId());
+
+                if (OrphanageAddTx(ptx, pfrom.GetId())) {
+                    AddToCompactExtraTransactions(ptx);
+                }
 
                 // Once added to the orphan pool, a tx is considered AlreadyHave, and we shouldn't request it anymore.
                 m_txrequest.ForgetTxHash(tx.GetHash());