Fix cluster-fuzz regression when getting message from Worker

test/mjsunit/d8-worker-spawn-worker.js

Index: test/mjsunit/d8-worker-spawn-worker.js
diff --git a/test/mjsunit/compiler/osr-nested.js b/test/mjsunit/d8-worker-spawn-worker.js
similarity index 79%
copy from test/mjsunit/compiler/osr-nested.js
copy to test/mjsunit/d8-worker-spawn-worker.js
index 4bdb0828ca2272332701c579bcbf9952cf43e6a4..b9d7f9ade4fd116837c275a73867eeda26076e5a 100644
--- a/test/mjsunit/compiler/osr-nested.js
+++ b/test/mjsunit/d8-worker-spawn-worker.js
@@ -1,4 +1,4 @@
-// Copyright 2013 the V8 project authors. All rights reserved.
+// Copyright 2015 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:
@@ -25,22 +25,22 @@
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-// Flags: --use-osr
+if (this.Worker) {
+  function f() {
+    var g = function () {
+      postMessage(42);
+    };
 
-function f() {
-  var sum = 0;
-  for (var i = 0; i < 10; i++) {
-    for (var j = 0; j < 100000; j++) {
-      var x = i + 2;
-      var y = x + 5;
-      var z = y + 3;
-      sum += z;
-    }
-  }
-  return sum;
-}
+    var w = new Worker(g);
 
+    onmessage = function(parentMsg) {
+      w.postMessage(parentMsg);
+      var childMsg = w.getMessage();
+      postMessage(childMsg);
+    };
+  }
 
-assertEquals(14500000, f());
-assertEquals(14500000, f());
-assertEquals(14500000, f());
+  var w = new Worker(f);
+  w.postMessage(9);
+  assertEquals(42, w.getMessage());
+}