maessen_hashtab is broken (trac #1546)

testsuite/tests/ghc-regress/programs/maessen-hashtab/test.T

 
-test('maessen_hashtab', compose(reqlib('QuickCheck'), compose(skip_if_fast,extra_run_opts('99999'))),
-	multimod_compile_and_run, ['HashTest', '-cpp'])
+test('maessen_hashtab', composes([reqlib('QuickCheck'),
+                                  skip_if_fast,
+                                  extra_run_opts('99999'),
+                                  expect_broken(1546)]),
+     multimod_compile_and_run, ['HashTest', '-cpp'])
 clean_o_hi()