Merge #18982: wallet: Minimal fix to restore conflicted transaction notifications

7eaf86d3bfc83f2beb3ef449707d5156853126fb trivial: Suggested cleanups to surrounding code (Russell Yanofsky)
b604c5c8b5892842f13dee89ae31812a28ab25d1 wallet: Minimal fix to restore conflicted transaction notifications (Russell Yanofsky)

Pull request description:

  This fix is a based on the fix by Antoine Riard (ariard) in https://github.com/bitcoin/bitcoin/pull/18600.

  Unlike that PR, which implements some new behavior, this just restores previous wallet notification and status behavior for transactions removed from the mempool because they conflict with transactions in a block. The behavior was accidentally changed in two `CWallet::BlockConnected` updates: a31be09bfd77eed497a8e251d31358e16e2f2eb1 and 7e89994133725125dddbfa8d45484e3b9ed51c6e from https://github.com/bitcoin/bitcoin/pull/16624, causing issue https://github.com/bitcoin/bitcoin/issues/18325.

  The change here could be improved and replaced with a more comprehensive cleanup, so it includes a detailed comment explaining future considerations.

  Fixes #18325

  Co-authored-by: Antoine Riard (ariard)

ACKs for top commit:
  jonatack:
    Re-ACK 7eaf86d3bfc83f
  ariard:
    ACK 7eaf86d, reviewed, built and ran tests.
  MarcoFalke:
    ACK 7eaf86d3bfc83f2beb3ef449707d5156853126fb 🍡

Tree-SHA512: 9a1efe975969bb522a9dd73c41064a9348887cb67883cd92c6571fd2df4321b9f4568363891abdaae14a3b9b168ef8142e95c373fc04677e46289b251fb84689

1 files changed, 10 insertions, 10 deletions

diff --git a/src/validationinterface.cpp b/src/validationinterface.cpp
index 9437f9c81..3dfbcc581 100644
--- a/src/validationinterface.cpp
+++ b/src/validationinterface.cpp
@@ -199,22 +199,22 @@ void CMainSignals::UpdatedBlockTip(const CBlockIndex *pindexNew, const CBlockInd
                           fInitialDownload);
 }
 
-void CMainSignals::TransactionAddedToMempool(const CTransactionRef &ptx) {
-    auto event = [ptx, this] {
-        m_internals->Iterate([&](CValidationInterface& callbacks) { callbacks.TransactionAddedToMempool(ptx); });
+void CMainSignals::TransactionAddedToMempool(const CTransactionRef& tx) {
+    auto event = [tx, this] {
+        m_internals->Iterate([&](CValidationInterface& callbacks) { callbacks.TransactionAddedToMempool(tx); });
     };
     ENQUEUE_AND_LOG_EVENT(event, "%s: txid=%s wtxid=%s", __func__,
-                          ptx->GetHash().ToString(),
-                          ptx->GetWitnessHash().ToString());
+                          tx->GetHash().ToString(),
+                          tx->GetWitnessHash().ToString());
 }
 
-void CMainSignals::TransactionRemovedFromMempool(const CTransactionRef &ptx) {
-    auto event = [ptx, this] {
-        m_internals->Iterate([&](CValidationInterface& callbacks) { callbacks.TransactionRemovedFromMempool(ptx); });
+void CMainSignals::TransactionRemovedFromMempool(const CTransactionRef& tx, MemPoolRemovalReason reason) {
+    auto event = [tx, reason, this] {
+        m_internals->Iterate([&](CValidationInterface& callbacks) { callbacks.TransactionRemovedFromMempool(tx, reason); });
     };
     ENQUEUE_AND_LOG_EVENT(event, "%s: txid=%s wtxid=%s", __func__,
-                          ptx->GetHash().ToString(),
-                          ptx->GetWitnessHash().ToString());
+                          tx->GetHash().ToString(),
+                          tx->GetWitnessHash().ToString());
 }
 
 void CMainSignals::BlockConnected(const std::shared_ptr<const CBlock> &pblock, const CBlockIndex *pindex) {