smb3: Incorrect size for netname negotiate context

It is not null terminated (length was off by two).

Also see similar change to Samba:

https://gitlab.com/samba-team/samba/merge_requests/666

Reported-by: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
This commit is contained in:
Steve French 2019-08-05 17:07:26 -05:00
commit df58fae724