Simplify TmwAthena::MessageOut
Since for tmwAthena we're writing messages directly into the output buffer, the MessageOut implementation does not need any members.
Also used SDL_SwapLE16 and SDL_SwapLE32 for convenience.
Since for tmwAthena we're writing messages directly into the output buffer, the MessageOut implementation does not need any members.
Also used SDL_SwapLE16 and SDL_SwapLE32 for convenience.