DDPCloseSocket
DDPCloseSocket Remove a socket and its listener from the table
#include <AppleTalk.h> AppleTalk Manager
short theSocket; socket number
returns Error Code; 0=no error
DDPCloseSocket is part of the AppleTalk alternate interface. It is
recommended that you use the preferred call, PCloseSkt instead.
DDPCloseSocket removes a socket and its socket listener from the socket
table and cancels all pending DDPRead calls that have been made for that
socket.
theSocket is the socket number.
Returns: an operating system Error Code. It will be one of:
noErr (0) No error
ddpSktErr (-91) Socket error

Notes: If you pass a socket number of 0, or if you attempt to close a socket that is
not open, DDPCloseSocket will return ddpSktErr.