added back accidental deletion

Author: daniel-sanche

tests/unit/test_pandas_backports.py

@@ -36,6 +36,8 @@ def _impl(name, *args, **kwargs):
         else:
             return REAL_IMPORT(name, *args, **kwargs)  # pragma: no cover
 
+    return _impl
+
 
 @mock.patch("builtins.__import__")
 def test_import_default_module_found(mock_import):