sys/socket.h is included multiple times

[fblaese]

macnocker/macnockclient.c

Lines 11 to 15 in d0bdfdb

	#include <sys/socket.h>
	#include <net/if.h>
	#include <netinet/ether.h>
	#include <sys/types.h>
	#include <sys/socket.h>

Thanks pbug44.