Rename _PyIter_GetBuiltin to _PyObject_GetBuiltin, and do not include it in the stable ABI.
diff --git a/Objects/dictobject.c b/Objects/dictobject.c
index 1924282..3db7a5e 100644
--- a/Objects/dictobject.c
+++ b/Objects/dictobject.c
@@ -2610,7 +2610,7 @@
         Py_DECREF(list);
         return NULL;
     }
-    return Py_BuildValue("N(N)", _PyIter_GetBuiltin("iter"), list);
+    return Py_BuildValue("N(N)", _PyObject_GetBuiltin("iter"), list);
 }
 
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