Fix bug in mjsunit/const-eval-init causing objects to be initialized to undef...

test/mjsunit/const-eval-init.js

 // Copyright 2009 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 73 matching lines @@
   var source = "const x = 9; assertEquals(9, x); x = 10; assertEquals(9, x)";
   eval(source);
 }
 
 testInitFastCaseExtension();
 
 function testInitSlowCaseExtension() {
   var source = "";
   // Introduce 100 properties on the context extension object to force
   // it in slow case.
-  for (var i = 0; i < 100; i++) source += ("var a" + i + " = i;");
+  for (var i = 0; i < 100; i++) source += ("var a" + i + " = " + i + ";");
   source += "const x = 10; assertEquals(10, x); x = 11; assertEquals(10, x)";
   eval(source);
 }
 
 testInitSlowCaseExtension();
 
 function testAssignSurroundingContextSlot() {
   var x = 12;
   function local() {
     var source = "delete x; const x = 13; assertEquals(13, x)";
     eval(source);
   }
   local();
   assertEquals(13, x);
 }
 
 testAssignSurroundingContextSlot();