Allow lazy compilation (and thus optimisation) of functions inside eval.

test/mjsunit/regress/regress-crbug-135066.js

 // Copyright 2012 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 18 matching lines @@
 var filler = "//" + new Array(1024).join('x');
 
 // Test strict eval in global context.
 eval(
   "'use strict';" +
   "var x = 23;" +
   "var f = function bozo1() {" +
   "  return x;" +
   "};" +
   "assertSame(23, f());" +
+  "f;" +
   filler
-);
+)();
 
 // Test default eval in strict context.
 (function() {
   "use strict";
   eval(
     "var y = 42;" +
     "var g = function bozo2() {" +
     "  return y;" +
     "};" +
     "assertSame(42, g());" +
+    "g;" +
     filler
-  );
+  )();
 })();