Fix output for "use asm" code from SpiderMonkey AST

(will only work properly if the SM tree contains "raw" properties for
Literal number nodes)

lib/parse.js

@@ -286,7 +286,7 @@ function tokenizer($TEXT, filename, html5_comments, shebang) {
             file    : filename
         };
         if (/^(?:num|string|regexp)$/i.test(type)) {
-            ret.literal = $TEXT.substring(ret.pos, ret.endpos);
+            ret.raw = $TEXT.substring(ret.pos, ret.endpos);
         }
         if (!is_comment) {
             ret.comments_before = S.comments_before;