Fix test-heap/OptimizedPretenuringAllocationFolding wrt concurrent recompilation delay.

R=hpayer@chromium.org

Review URL: https://codereview.chromium.org/148063008

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19338 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

test/cctest/test-heap.cc

@@ -2210,10 +2210,10 @@ TEST(OptimizedPretenuringAllocationFolding) {
       "var number_elements = 20000;"
       "var elements = new Array();"
       "function f() {"
-      "  for (var i = 0; i < 20000-1; i++) {"
+      "  for (var i = 0; i < number_elements; i++) {"
       "    elements[i] = new DataObject();"
       "  }"
-      "  return new DataObject()"
+      "  return elements[number_elements-1]"
       "};"
       "f(); f(); f();"
       "%OptimizeFunctionOnNextCall(f);"