lsalzman/enet — pull request #13 by Ablu (2013-04-06 21:17:08+00:00)
Title: Use _WIN32 instead of WIN32

This fixes mingw builds when using c++0x. It does not define WIN32
there. The issue is that projects which include enets headers cannot
compile with c++0x enabled and mingw because of this header generating
an error.