auth-gen-token: Hardening memory cleanup on auth-token failuers

auth-gen-token: Hardening memory cleanup on auth-token failuers

Further improve the memory management when a clients --auth-token
fails the server side token authentication enabled via --auth-gen-token.

v2 - Add ASSERT() if base64 encoding of token fails
v3 - Use proper boolean logic in ASSERT()
v4 - Rebase against The Great Reformatting

Signed-off-by: David Sommerseth <davids@openvpn.net>
Acked-by: Steffan Karger <steffan.karger@fox-it.com>
Message-Id: <1481883907-26413-1-git-send-email-davids@openvpn.net>
URL: http://www.mail-archive.com/search?l=mid&q=1481883907-26413-1-git-send-email-davids@openvpn.net