compatible with old version of node

Author: bobzhang

jscomp/stdlib-406/random.ml

@@ -26,7 +26,7 @@
 *)
 
 let random_seed: unit -> int array = fun _ -> 
-  let seed :int = [%raw "Math.floor(Math.random()*0x7fff_ffff)"] in
+  let seed :int = [%raw "Math.floor(Math.random()*0x7fffffff)"] in
   [|seed|]
 
 module State = struct

lib/es6/random.js

@@ -9,7 +9,7 @@ import * as Caml_int64 from "./caml_int64.js";
 import * as Caml_string from "./caml_string.js";
 
 function random_seed(param) {
-  return [(Math.floor(Math.random()*0x7fff_ffff))];
+  return [(Math.floor(Math.random()*0x7fffffff))];
 }
 
 function assign(st1, st2) {

lib/js/random.js

@@ -9,7 +9,7 @@ var Caml_int64 = require("./caml_int64.js");
 var Caml_string = require("./caml_string.js");
 
 function random_seed(param) {
-  return [(Math.floor(Math.random()*0x7fff_ffff))];
+  return [(Math.floor(Math.random()*0x7fffffff))];
 }
 
 function assign(st1, st2) {