$NetBSD$

Include header for exit(3).

--- wand_head.h.orig	2016-01-12 23:04:53.000000000 +0000
+++ wand_head.h
@@ -21,6 +21,7 @@
 
 
 #include <stdio.h>
+#include <stdlib.h>
 #include <ncurses.h>
 #include <string.h>
 #include <fcntl.h>