small changes

mix/ClientModel.cpp

@@ -207,7 +207,7 @@ void ClientModel::setupState(QVariantMap _state)
 	executeSequence(transactionSequence, accounts);
 }
 
-void ClientModel::executeSequence(std::vector<TransactionSettings> const& _sequence, std::map<Secret, u256> _balances)
+void ClientModel::executeSequence(std::vector<TransactionSettings> const& _sequence, std::map<Secret, u256> const& _balances)
 {
 	if (m_running)
 		BOOST_THROW_EXCEPTION(ExecutionStateException());

mix/ClientModel.h

@@ -193,7 +193,7 @@ signals:
 private:
 	RecordLogEntry* lastBlock() const;
 	QVariantMap contractAddresses() const;
-	void executeSequence(std::vector<TransactionSettings> const& _sequence, std::map<Secret, u256> _balances);
+	void executeSequence(std::vector<TransactionSettings> const& _sequence, std::map<Secret, u256> const& _balances);
 	dev::Address deployContract(bytes const& _code, TransactionSettings const& _tr = TransactionSettings());
 	void callContract(Address const& _contract, bytes const& _data, TransactionSettings const& _tr);
 	void onNewTransaction();