implement sparc return address functionality

tests/unit_tests/carrot_impl.cpp

@@ -205,6 +205,7 @@ static void subtest_multi_account_transfer_over_transaction(const unittest_trans
     std::vector<RCTOutputEnoteProposal> rederived_output_enote_proposals;
     encrypted_payment_id_t rederived_encrypted_payment_id;
     size_t change_index;
+    std::unordered_map<crypto::public_key, size_t> normal_payments_indices;
     get_output_enote_proposals(tx_proposal.normal_payment_proposals,
         modified_selfsend_payment_proposals,
         *parsed_encrypted_payment_id,
@@ -213,7 +214,8 @@ static void subtest_multi_account_transfer_over_transaction(const unittest_trans
         parsed_key_images.at(0),
         rederived_output_enote_proposals,
         rederived_encrypted_payment_id,
-        change_index);
+        change_index,
+        normal_payments_indices);
     EXPECT_EQ(*parsed_encrypted_payment_id, rederived_encrypted_payment_id);
     ASSERT_EQ(parsed_enotes.size(), rederived_output_enote_proposals.size());
     for (size_t enote_idx = 0; enote_idx < parsed_enotes.size(); ++enote_idx)