Fix for cctest/test-api/SetJitCodeEventHandler: generate less objects during...

Fix for cctest/test-api/SetJitCodeEventHandler: generate less objects during execution to avoid unwanted GCs.

BUG=v8:3899
LOG=N

Review URL: https://codereview.chromium.org/934243003

Cr-Commit-Position: refs/heads/master@{#26721}

test/cctest/test-api.cc

@@ -12313,11 +12313,11 @@ UNINITIALIZED_TEST(SetJitCodeEventHandler) {
   const char* script =
       "function bar() {"
       "  var sum = 0;"
-    "  for (i = 0; i < 100; ++i)"
+      "  for (i = 0; i < 10; ++i)"
       "    sum = foo(i);"
       "  return sum;"
       "}"
-    "function foo(i) { return i * i; };"
+      "function foo(i) { return i; };"
       "bar();";
 
   // Run this test in a new isolate to make sure we don't