Slight overlook on fd_search

In fD_search, the predicate (or procedure) search has a bug when it comes to
the value choice parameter (for the default ones).

It can be corrected by changing the second production of predicate choose/6
to:

choose(X,N,Type,_In, _Out, _Module):-
	member((Type, Choice),[(indomain_min, min),(indomain_max, max),
(indomain_middle, middle), (indomain_median, median), (indomain_split,
split), (indomain_interval, interval), (indomain_random, random)]),
	!,
	access(X,N,Var),
	indomain(Var,Choice).


--Rui Mendes