patch memory leaks using analyzer

test/sample_code.cpp

@@ -2,6 +2,7 @@
 #include <iostream>
 #include "wallet2.h"
 #include "wallet/monero_wallet_full.h"
+#include "utils/monero_utils.h"
 
 using namespace std;
 
@@ -52,23 +53,27 @@ int main(int argc, const char* argv[]) {
   // query a transaction by hash
   monero_tx_query tx_query;
   tx_query.m_hash = "314a0f1375db31cea4dac4e0a51514a6282b43792269b3660166d4d2b46437ca";
-  shared_ptr<monero_tx_wallet> tx = wallet_restored->get_txs(tx_query)[0];
+  vector<shared_ptr<monero_tx_wallet>> txs = wallet_restored->get_txs(tx_query);
+  shared_ptr<monero_tx_wallet> tx = txs[0];
   for (const shared_ptr<monero_transfer> transfer : tx->get_transfers()) {
     bool is_incoming = transfer->is_incoming().get();
     uint64_t in_amount = transfer->m_amount.get();
     int account_index = transfer->m_account_index.get();
   }
+  monero_utils::free(txs);
 
   // query incoming transfers to account 1
   monero_transfer_query transfer_query;
   transfer_query.m_is_incoming = true;
   transfer_query.m_account_index = 1;
   vector<shared_ptr<monero_transfer>> transfers = wallet_restored->get_transfers(transfer_query);
+  monero_utils::free(transfers);
 
   // query unspent outputs
   monero_output_query output_query;
   output_query.m_is_spent = false;
   vector<shared_ptr<monero_output_wallet>> outputs = wallet_restored->get_outputs(output_query);
+  monero_utils::free(outputs);
 
   // create and sync a new wallet with a random seed
   wallet_config = monero_wallet_config();
@@ -114,6 +119,7 @@ int main(int argc, const char* argv[]) {
   tx_config.m_relay = true;
   shared_ptr<monero_tx_wallet> sent_tx = wallet_restored->create_tx(tx_config);
   bool in_pool = sent_tx->m_in_tx_pool.get();  // true
+  monero_utils::free(sent_tx);
 
   // mine with 7 threads to push the network along
   int num_threads = 7;
@@ -144,6 +150,7 @@ int main(int argc, const char* argv[]) {
   shared_ptr<monero_tx_wallet> created_tx = wallet_restored->create_tx(tx_config);
   uint64_t fee = created_tx->m_fee.get(); // "Are you sure you want to send ...?"
   wallet_restored->relay_tx(*created_tx); // recipient receives notification within 5 seconds
+  monero_utils::free(created_tx);
 
   // the recipient wallet will be notified
   if (FUNDS_RECEIVED) cout << "Sample code completed successfully" << endl;
@@ -152,4 +159,6 @@ int main(int argc, const char* argv[]) {
   // save and close the wallets
   wallet_restored->close(true);
   wallet_random->close(true);
+  delete wallet_restored;
+  delete wallet_random;
 }