tests: move lines around

tests/test_mdto_voorbeelden.py

@@ -99,12 +99,12 @@ def test_serialization_chain_bestand(voorbeeld_bestand_xml):
 
 def test_file_saving(voorbeeld_archiefstuk_xml, tmp_path_factory):
     """Test if `save()` produces byte-for-byte equivalent XML from archiefstuk example"""
-    informatieobject = mdto.from_xml(voorbeeld_archiefstuk_xml)
 
     # location to write to
     tmpdir = tmp_path_factory.mktemp("Output")
     outfile = tmpdir / "test archiefstuk.xml"
 
+    informatieobject = mdto.from_xml(voorbeeld_archiefstuk_xml)
     informatieobject.save(outfile)
 
     # MDTO uses CRLF (DOS) line endings. Convert them to UNIX line endings.