relayd(8): convert explicit_bzero() + free() to freezero()

[Frederic Cambus]

Hi tech@,

Convert explicit_bzero() + free() to freezero().

Comments? OK?

Index: usr.sbin/relayd/relayd.c
===================================================================
RCS file: /cvs/src/usr.sbin/relayd/relayd.c,v
retrieving revision 1.165
diff -u -p -r1.165 relayd.c
--- usr.sbin/relayd/relayd.c    24 Jan 2017 10:49:14 -0000      1.165
+++ usr.sbin/relayd/relayd.c    10 Apr 2017 15:06:38 -0000
@@ -550,8 +550,7 @@ purge_key(char **ptr, off_t len)
        if (key == NULL || len == 0)
                return;
 
-       explicit_bzero(key, len);
-       free(key);
+       freezero(key, len);
 
        *ptr = NULL;
 }