Allow wallet2.h to run in WebAssembly

- Add abstract_http_client.h which http_client.h extends.
- Replace simple_http_client with abstract_http_client in wallet2,
message_store, message_transporter, and node_rpc_proxy.
- Import and export wallet data in wallet2.
- Use #if defined __EMSCRIPTEN__ directives to skip incompatible code.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/wallet/wallet_rpc_payments.cpp b/src/wallet/wallet_rpc_payments.cpp
index 41696d13b..4f5364269 100644
--- a/src/wallet/wallet_rpc_payments.cpp
+++ b/src/wallet/wallet_rpc_payments.cpp
@@ -85,7 +85,7 @@ bool wallet2::make_rpc_payment(uint32_t nonce, uint32_t cookie, uint64_t &credit
   uint64_t pre_call_credits = m_rpc_payment_state.credits;
   req.client = get_client_signature();
   epee::json_rpc::error error;
-  bool r = epee::net_utils::invoke_http_json_rpc("/json_rpc", "rpc_access_submit_nonce", req, res, error, m_http_client, rpc_timeout);
+  bool r = epee::net_utils::invoke_http_json_rpc("/json_rpc", "rpc_access_submit_nonce", req, res, error, *m_http_client, rpc_timeout);
   m_daemon_rpc_mutex.unlock();
   THROW_ON_RPC_RESPONSE_ERROR_GENERIC(r, error, res, "rpc_access_submit_nonce");
   THROW_WALLET_EXCEPTION_IF(res.credits < pre_call_credits, error::wallet_internal_error, "RPC payment did not increase balance");