Adjust script to cope with warning statement

Author: mandolaerik

py/dead_dml_methods.py

@@ -113,6 +113,10 @@ def traverse_ast(ast):
 def method_locations(path):
     from dml.toplevel import parse_file, determine_version
     from dml import logging, messages
+    import dml.globals
+    from dml import compat
+    # needed to parse 1.2/utility.dml
+    dml.globals.enabled_compat.add(compat.warning_statement)
     for warning in messages.warnings:
         logging.ignore_warning(warning)