restored default GET_ITERATOR_CHUNK_SIZE

Author: Jibola

django_mongodb_backend/compiler.py

@@ -269,7 +269,7 @@ def results_iter(
         results=None,
         tuple_expected=False,
         chunked_fetch=False,
-        chunk_size=None,
+        chunk_size=GET_ITERATOR_CHUNK_SIZE,
     ):
         """
         Return an iterator over the results from executing query given