mani_reserve_slots_allow_slot_fill 0 doesn't keep the slot always free as supposed to

What steps will reproduce the problem?
1.Install 1.2T
2.Set up your mani_server.cfg like this:
*****************************************************************************
// Module 06: Reserved Slots
//
// Desc : The Reserved Slots module configuration cvars
//
*****************************************************************************

// Turn on / off reserve slots
mani_reserve_slots 1

// Number of reserve slots you have
mani_reserve_slots_number_of_slots 2

// User defined message shown in players console when kicked
mani_reserve_slots_kick_message "You were disconnected for using a reserve
slot"

// User defined message for redirection of players to another server
mani_reserve_slots_redirect_message "This server is full, you are being
redirected to another one of our servers"

// The IP address of the server you wish to redirect players to. Leave it
blank 
// if you do not want redirection to be used
mani_reserve_slots_redirect ""

// This defines whether you want your reserve slots to fill with reserve
players 
// or always be kept free (1 = allow slots to fill, 0 = always keeps slots
free 
// and kick player instead)
mani_reserve_slots_allow_slot_fill 0

// Type of method used to kick players, 0 = by highest ping (spectators
first), 
// 1 = by connection time (spectators go first)
mani_reserve_slots_kick_method 1

// IPs of players get stored to allow reserve slots and password bypassing
( admins )
// to work via the gui server browser.  This setting allows the server to
purge stale 
// records after a set amount of time.
mani_reserve_slots_ip_keep_history 0

// Enforces the password even for admins.  The new reserve slot system can
allow
// admins to bypass the server password and join.  This cvar disables that
feature
mani_reserve_slots_enforce_password 0

// This allows admins with known IP addresses to be allowed to join via the
reserve
// slot system.  Setting this to 0 will only allow those in the
reserveslots.txt file.
mani_reserve_slots_include_admin 0

3. Set your server to only have 2 slots and join the server with another person

4. Rename your clients.txt to clients.txt.old & restart your server

What is the expected output?
Because of mani_reserve_slots_allow_slot_fill 0, only one person should be
able to join, while all other players should get instantly kicked because 1
slot is for reserved slots players only.

What do you see instead?
All 2 players can join the server, although 1 slot should only be taken by
a player, while the other should always be keept free for a reserved slot
player (slot that should always be free gets "filled")

What version of the product are you using? On what operating system?
M-A-P 1.2T on Win7 SRCDS

Please provide any additional information below.
Seems like maybe the CVar doesn't get checked?
Original issue reported on code.google.com by farnhammer_manuel@web.de on 27 Dec 2009 at 6:02
gunslinger23 / maniadminplugin

mani_reserve_slots_allow_slot_fill 0 doesn't keep the slot always free as supposed to #83
