NetBSD noticed arc4random() tested, arc4random_buf() used.

Hi,

There's a configure.ac v. sbr/m_rand.c mismatch:
arc4random() v. arc4random_buf().

    $ G g arc4random
    configure.ac:AC_CHECK_FUNCS([wcwidth mbtowc getutxent arc4random mkstemps])
    sbr/m_rand.c:#include <stdlib.h>  /* for abs(), srand(), rand(), arc4random() */
    sbr/m_rand.c:  arc4random_buf(buf, n);
    $

It apparently causes problems on some platforms.
Spotted because I was browsing
https://github.com/drecklypkg/dreckly/blob/trunk/mail/nmh/Makefile#L77

-- 
Cheers, Ralph.