mempool: Use NodeClock+friends for LoadMempool

src/validation.cpp

@@ -4644,7 +4644,6 @@ static const uint64_t MEMPOOL_DUMP_VERSION = 1;
 
 bool LoadMempool(CTxMemPool& pool, CChainState& active_chainstate, FopenFn mockable_fopen_function)
 {
-    int64_t nExpiryTimeout = std::chrono::seconds{pool.m_expiry}.count();
     FILE* filestr{mockable_fopen_function(gArgs.GetDataDirNet() / "mempool.dat", "rb")};
     CAutoFile file(filestr, SER_DISK, CLIENT_VERSION);
     if (file.IsNull()) {
@@ -4657,7 +4656,7 @@ bool LoadMempool(CTxMemPool& pool, CChainState& active_chainstate, FopenFn mocka
     int64_t failed = 0;
     int64_t already_there = 0;
     int64_t unbroadcast = 0;
-    int64_t nNow = GetTime();
+    auto now = NodeClock::now();
 
     try {
         uint64_t version;
@@ -4680,7 +4679,7 @@ bool LoadMempool(CTxMemPool& pool, CChainState& active_chainstate, FopenFn mocka
             if (amountdelta) {
                 pool.PrioritiseTransaction(tx->GetHash(), amountdelta);
             }
-            if (nTime > nNow - nExpiryTimeout) {
+            if (nTime > TicksSinceEpoch<std::chrono::seconds>(now - pool.m_expiry)) {
                 LOCK(cs_main);
                 const auto& accepted = AcceptToMemoryPool(active_chainstate, tx, nTime, /*bypass_limits=*/false, /*test_accept=*/false);
                 if (accepted.m_result_type == MempoolAcceptResult::ResultType::VALID) {