ntlm: restyle compressed multiple function calls

ntlm: restyle compressed multiple function calls

The gen_md4_hash() function is receiving as first argument a buffer
that is filled by a function invoked when evaluating the second
argument.

Although this is proper C, it makes the call invocation a bit obscure
because it is not immediately easy to grasp how the 'pwbuf' buffer is
filled.

Unroll the multiple function call onto lines and make the core more
readable.

Signed-off-by: Antonio Quartulli <a@unstable.cc>
Acked-by: Steffan Karger <steffan@karger.me>
Message-Id: <20170710043441.24770-4-a@unstable.cc>
URL: https://www.mail-archive.com/openvpn-devel@lists.sourceforge.net/msg15030.html
Signed-off-by: David Sommerseth <davids@openvpn.net>
(cherry picked from commit c2d08916f1b7933bec81422d1f14f84e9b1ef878)