fix test

tests/run/genexpr_iterable_lookup_T600.pyx

@@ -26,12 +26,12 @@ def list_genexpr_iterable_lookup():
 def genexpr_iterable_in_closure():
     """
     >>> genexpr_iterable_in_closure()
-    [0, 4, 8]
+    ['aa', 'cc']
     """
     x = 'abc'
     def f():
         return x
-    result = list( x*2 for x in x if x % 2 == 0 )
+    result = list( x*2 for x in x if x != 'b' )
     assert x == 'abc' # don't leak in Py3 code
     assert f() == 'abc' # don't leak in Py3 code
     return result