At module cleanup time, clear the module dict before the global references...

At module cleanup time, clear the module dict before the global references that its content might still be using.

Cython/Compiler/ModuleNode.py

@@ -2707,7 +2707,7 @@ class ModuleNode(Nodes.Node, Nodes.BlockNode):
         if Options.pre_import is not None:
             code.put_decref_clear(Naming.preimport_cname, py_object_type,
                                   nanny=False, clear_before_decref=True)
-        for cname in [Naming.cython_runtime_cname, env.module_dict_cname, Naming.builtins_cname]:
+        for cname in [env.module_dict_cname, Naming.cython_runtime_cname, Naming.builtins_cname]:
             code.put_decref_clear(cname, py_object_type, nanny=False, clear_before_decref=True)
 
     def generate_main_method(self, env, code):