fix: pass request_id to caller in result_info also on RPC call error

[hjelmeland]

On inbound RESULT ERROR, pass on the request_id to the caller in result_info struct. Like already done on RESULT.

We have a project where we for a feature want to call identical WAMP RPC "body" on hundreds of devices registered on a wampcc router. And we like to have an efficient way of processing responses based on request_id.