add more defaults

Author: yangdanny97

pandas-stubs/io/stata.pyi

@@ -101,7 +101,7 @@ class StataReader(StataParser, abc.Iterator):
         traceback: TracebackType | None,
     ) -> None: ...
     def __next__(self) -> DataFrame: ...
-    def get_chunk(self, size: int | None = ...) -> DataFrame: ...
+    def get_chunk(self, size: int | None = None) -> DataFrame: ...
     def read(
         self,
         nrows: int | None = ...,