Fix a parameter inversion in test_msgfmt.py

compile_messages parameters order has changed in a previous commit to allow compiling multiple PO files.

Author: s-ball

Lib/test/test_tools/test_msgfmt.py

@@ -54,7 +54,7 @@ def test_compilation(self):
     def test_binary_header(self):
         with temp_cwd():
             tmp_mo_file = 'messages.mo'
-            compile_messages(data_dir / "general.po", tmp_mo_file)
+            compile_messages(tmp_mo_file, data_dir / "general.po")
             with open(tmp_mo_file, 'rb') as f:
                 mo_data = f.read()