Update preferences.dm

Signed-off-by: rye-rice <[email protected]>

code/modules/client/preferences.dm

@@ -5,7 +5,7 @@ GLOBAL_LIST_EMPTY(preferences_datums)
 	//doohickeys for savefiles
 	var/path
 	var/default_slot = 1				//Holder so it doesn't default to slot 1, rather the last one used
-	var/max_save_slots = 40
+	var/max_save_slots = 30
 
 	//non-preference stuff
 	var/muted = 0