Change default nTxConfirmTarget to 2

src/wallet/wallet.h

@@ -45,7 +45,7 @@ static const CAmount nHighTransactionFeeWarning = 0.01 * COIN;
 //! -maxtxfee default
 static const CAmount DEFAULT_TRANSACTION_MAXFEE = 0.1 * COIN;
 //! -txconfirmtarget default
-static const unsigned int DEFAULT_TX_CONFIRM_TARGET = 1;
+static const unsigned int DEFAULT_TX_CONFIRM_TARGET = 2;
 //! -maxtxfee will warn if called with a higher fee than this amount (in satoshis)
 static const CAmount nHighTransactionMaxFeeWarning = 100 * nHighTransactionFeeWarning;
 //! Largest (in bytes) free transaction we're willing to create