--- Xwnmo/xwnmo/do_socket.c.orig	Tue Aug 23 10:11:30 1994
+++ Xwnmo/xwnmo/do_socket.c	Fri Mar 11 17:01:40 2016
@@ -116,8 +116,6 @@ static int	rc = 0;
 #define	sock_clr(array,pos)	(array[pos/BINTSIZE] &= ~(1<<(pos%BINTSIZE)))
 #define	sock_tst(array,pos)	(array[pos/BINTSIZE] & (1<<(pos%BINTSIZE)))
 
-extern int read(), write();
-
 #define	_Read(fd, data, size)	read((fd), (data), (size))
 #define	_Write(fd, data, size)	write((fd), (data), (size))
 
@@ -588,7 +586,6 @@ wait_for_socket()
 {
     register int i;
     int n, ret;
-    extern int errno;
     extern int select();
 
     /*
