wallet_rpc_server: always fill out subaddr_indices in get_transfers

It was not filled out for in and pool types

src/wallet/wallet_rpc_server.cpp

@@ -302,6 +302,7 @@ namespace tools
     entry.note = m_wallet->get_tx_note(pd.m_tx_hash);
     entry.type = pd.m_coinbase ? "block" : "in";
     entry.subaddr_index = pd.m_subaddr_index;
+    entry.subaddr_indices.push_back(pd.m_subaddr_index);
     entry.address = m_wallet->get_subaddress_as_str(pd.m_subaddr_index);
     set_confirmations(entry, m_wallet->get_blockchain_current_height(), m_wallet->get_last_block_reward());
   }
@@ -373,6 +374,7 @@ namespace tools
     entry.double_spend_seen = ppd.m_double_spend_seen;
     entry.type = "pool";
     entry.subaddr_index = pd.m_subaddr_index;
+    entry.subaddr_indices.push_back(pd.m_subaddr_index);
     entry.address = m_wallet->get_subaddress_as_str(pd.m_subaddr_index);
     set_confirmations(entry, m_wallet->get_blockchain_current_height(), m_wallet->get_last_block_reward());
   }