use freezero() instead of explicit_bzero + free

diff --git a/usr.bin/signify/signify.c b/usr.bin/signify/signify.c
index 5158326..5a42802 100644 (file)
--- a/usr.bin/signify/signify.c
+++ b/usr.bin/signify/signify.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: signify.c,v 1.126 2016/10/06 22:38:25 espie Exp $ */
+/* $OpenBSD: signify.c,v 1.127 2017/04/18 02:20:50 deraadt Exp $ */
 /*
  * Copyright (c) 2013 Ted Unangst <tedu@openbsd.org>
  *
@@ -244,8 +244,7 @@ writekeyfile(const char *filename, const char *comment, const void *buf,
        fd = xopen(filename, O_CREAT|oflags|O_NOFOLLOW|O_WRONLY, mode);
        header = createheader(comment, buf, buflen);
        writeall(fd, header, strlen(header), filename);
-       explicit_bzero(header, strlen(header));
-       free(header);
+       freezero(header, strlen(header));
        close(fd);
 }