Convert array index to integer when computing pause distribution for spinning-balls.

benchmarks/spinning-balls/v.js

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 335 matching lines @@
 
   this.angle += Math.PI / 90.0;
 };
 
 
 function updateStats(pause) {
   numberOfFrames++;
   if (pause > 20) {
     sumOfSquaredPauses += (pause - 20) * (pause - 20);
   }
-  pauseDistribution[pause / 10] |= 0;
-  pauseDistribution[pause / 10]++;
+  pauseDistribution[Math.floor(pause / 10)] |= 0;
+  pauseDistribution[Math.floor(pause / 10)]++;
 }
 
 
 function renderStats() {
   var msg = document.createElement("p");
   msg.innerHTML = "Score " +
     Math.round(numberOfFrames * 1000 / sumOfSquaredPauses);
   var table = document.createElement("table");
   table.align = "center";
   for (var i = 0; i < pauseDistribution.length; i++) {
@@ skipping 78 matching lines @@
 }
 
 function start() {
   benchmarkTimeLimit = document.getElementById("timelimit").value * 1000;
   document.body.removeChild(form);
   init();
   render();
 }
 
 renderForm();