compile fix

src/wallet/api/wallet.cpp

@@ -1208,8 +1208,8 @@ UnsignedTransaction *WalletImpl::loadUnsignedTxFromStr(const std::string &unsign
 
     // Check tx data and construct confirmation message
     std::string extra_message;
-    if (!transaction->m_unsigned_tx_set.transfers.second.empty())
-        extra_message = (boost::format("%u outputs to import. ") % (unsigned)transaction->m_unsigned_tx_set.transfers.second.size()).str();
+    if (!std::get<2>(transaction->m_unsigned_tx_set.transfers).empty())
+        extra_message = (boost::format("%u outputs to import. ") % (unsigned)std::get<2>(transaction->m_unsigned_tx_set.transfers).size()).str();
     transaction->checkLoadedTx([&transaction](){return transaction->m_unsigned_tx_set.txes.size();}, [&transaction](size_t n)->const tools::wallet2::tx_construction_data&{return transaction->m_unsigned_tx_set.txes[n];}, extra_message);
     setStatus(transaction->status(), transaction->errorString());