Style questions

[lvenerosy]

Granted I have never done extensive C style programming, it might be my lack of familiarity talking.

• what use is that empty struct

  ggpo/src/include/ggponet.h

  Line 79 in e4e11d8

  } local;

  I found some info about tagging structs but I'm not sure that's what is happening here.
• is there a reason to return a GGPOErrorCode when there is only one return value possible? Maybe for async uses?

• ggpo/src/lib/ggpo/poll.cpp

  Line 51 in e4e11d8

  while (Pump(100)) {

  I've seen these kinds of while in a few places, and they scare me :p