Make sure builtins add their utility code also when they are only being used...

Make sure builtins add their utility code also when they are only being used as names (applies to StopAsyncIteration, for example).

Cython/Compiler/ExprNodes.py

@@ -2133,6 +2133,8 @@ class NameNode(AtomicExprNode):
         entry = self.entry
         if entry is None:
             return # There was an error earlier
+        if entry.utility_code:
+            code.globalstate.use_utility_code(entry.utility_code)
         if entry.is_builtin and entry.is_const:
             return # Lookup already cached
         elif entry.is_pyclass_attr: