trivial diff: fix bug in fft.m

[Fergus Henderson]

extras/complex_numbers/samples/fft.m:
	Fix a compilation error: need to import the
	parent module `complex_numbers' before importing
	the child module `complex_numbers:complex'.

Index: extras/complex_numbers/samples/fft.m
===================================================================
RCS file: /home/mercury1/repository/mercury/extras/complex_numbers/samples/fft.m,v
retrieving revision 1.3
diff -u -r1.3 fft.m
--- fft.m	1998/05/30 12:10:19	1.3
+++ fft.m	1998/11/18 16:21:02
@@ -25,7 +25,7 @@
 %------------------------------------------------------------------------------%
 :- interface.
 
-:- import_module list, complex_numbers:complex.
+:- import_module list, complex_numbers, complex_numbers:complex.
 
 :- pred fft(list(complex), list(complex)).
 :- mode fft(in, out) is det.

-- 
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