md5c.c is broken on amd64

[Steve Kargl]

It just isn't my day to work on upgrade a 3 day old -current. ;(

/usr/src/lib/libcrypt/../libmd/md5c.c: In function `__MD5Update':
/usr/src/lib/libcrypt/../libmd/md5c.c:154: error: argument "in" doesn't match prototype
/usr/include/sys/md5.h:41: error: prototype declaration
*** Error code 1

Stop in /usr/src/lib/libcrypt.
*** Error code 1

Stop in /usr/src/lib.

-- 
Steve