qt: Set flag after inital load on transaction table model

Author: promag

src/qt/transactiontablemodel.cpp

@@ -97,6 +97,8 @@ class TransactionTablePriv
     QList<TransactionRecord> cachedWallet;
 
     bool fQueueNotifications = false;
+    /** True when model finishes loading all wallet transactions on start */
+    bool m_loaded = false;
     std::vector< TransactionNotification > vQueueNotifications;
 
     void NotifyTransactionChanged(const uint256 &hash, ChangeType status);
@@ -106,15 +108,15 @@ class TransactionTablePriv
      */
     void refreshWallet(interfaces::Wallet& wallet)
     {
-        qDebug() << "TransactionTablePriv::refreshWallet";
-        cachedWallet.clear();
+        assert(!m_loaded);
         {
             for (const auto& wtx : wallet.getWalletTxs()) {
                 if (TransactionRecord::showTransaction()) {
                     cachedWallet.append(TransactionRecord::decomposeTransaction(wtx));
                 }
             }
         }
+        m_loaded = true;
     }
 
     /* Update our model of the wallet incrementally, to synchronize our model of the wallet