Fix event created for WSAEventSelect: The event we pass to WSAEventSelect should...

Fix event created for WSAEventSelect: The event we pass to WSAEventSelect should be WSAEVENT instead of normal event.
From MSDN, it looks same as CreateEvent(NULL, FALSE, FALSE, NULL):
	The WSACreateEvent function creates a manual-reset event object with an initial state of nonsignaled. The event object is unnamed.
However they are not really equivalent. When we use normal event, the WSAEventSelect still works but the event appears to be 'auto-reset'.