If the probe for SMB2 fails, close the connection and then try probing
for SMB1 as a backup.
Since there are more SMB2 servers in the wild, that is the first
attempt.
These two functions are largely duplicates, and only differ in the
boolean option passed to LoggedNegotiateProtocol(). Combine the
functions, and just take that option in as an argument to pass along.
