sysutils/socket: include errno.h for errno

errno must be accessed by a macro from errno.h.

sysutils/socket/Makefile

@@ -1,6 +1,6 @@
 PORTNAME=	socket
 PORTVERSION=	1.2
-PORTREVISION=	1
+PORTREVISION=	2
 CATEGORIES=	sysutils net
 MASTER_SITES=	https://wolfram.schneider.org/src/ LOCAL/wosch
 

sysutils/socket/files/patch-globals.h

@@ -0,0 +1,11 @@
+--- globals.h.orig
++++ globals.h
+@@ -48,7 +48,7 @@
+ void strip_crs A((char *from, char *to, int *sizep)) ;
+ void background A((void)) ;
+ 
+-extern int errno ;
++#include <errno.h>
+ 
+ /* global variables */
+ extern int serverflag ;