WSPSocket directly returns error codes

WSASocketW does the following after calling WSPSocket:

569        /* Check if we got a valid socket */

570        if (Status == WSAEINVAL)

571        {

572            Status = INVALID_SOCKET;

573            ErrorCode = WSAEINVAL;

574        }

This is a huge hack. WSPSocket should just properly return a socket or INVALID_SOCKET, and set lpErrno.

(in fact this code block is even duplicated – which is why Coverity complained about it in CID 1400935)