Make sure setInterval(cb, 0) loops infinitely

src/node.js

@@ -604,7 +604,7 @@ global.setTimeout = function (callback, after) {
 global.setInterval = function (callback, repeat) {
   var timer = new process.Timer();
   addTimerListener.apply(timer, arguments);
-  timer.start(repeat, repeat);
+  timer.start(repeat, repeat ? repeat : 1);
   return timer;
 };
 

test/pummel/test-timers.js

@@ -74,7 +74,14 @@ setInterval(function(param1, param2){
     clearInterval(this);
 }, 1000, "param1", "param2");
 
+// setInterval(cb, 0) should be called multiple times.
+count4 = 0;
+interval4 = setInterval(function () {
+  if (++count4 > 10) clearInterval(interval4);
+}, 0);
+
 process.addListener("exit", function () {
   assert.equal(true, setTimeout_called);
   assert.equal(3, interval_count);
+  assert.equal(11, count4);
 });