parameter.c:132: warning: passing argument 1 of 'getnetgrent' from incompatible pointer type

--- parameter.c.orig	Mon Aug 27 08:44:54 2012
+++ parameter.c	Mon Aug 27 08:45:08 2012
@@ -127,7 +127,7 @@ read_machinenetgroup(linkedlist * machinelist,
 #endif
   if (setnetgrent(groupname) WORKAROUND_SETNETGRENT) 
     {
-      char *hostp=NULL, *userp=NULL, *domainp=NULL;
+      const char *hostp=NULL, *userp=NULL, *domainp=NULL;
       
       while (getnetgrent(&hostp, &userp, &domainp))
 	{