message: Update the construction call of swift::PersistentParserState
diff: @@ -1547,7 +1547,7 @@ ParseAndImport(SwiftASTContext *swift_ast_context, Expression &expr,
  // them in.
  swift_ast_context->AddDebuggerClient(external_lookup);
  - swift::PersistentParserState persistent_state;
  + swift::PersistentParserState persistent_state(*ast_context);
  while (!done) {
  swift::parseIntoSourceFile(*source_file, buffer_id, &done, nullptr,
  