Fix for FW_ASYREQ. - set send.pay_len correctly. - copy response only if needed. - remove unnecessary 'err = 0'.
Fix for FW_ASYREQ.
- set send.pay_len correctly.
- copy response only if needed.
- remove unnecessary 'err = 0'.

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase