Canonicalize handles for optimized compilation.

src/x87/macro-assembler-x87.cc

Index: src/x87/macro-assembler-x87.cc
diff --git a/src/x87/macro-assembler-x87.cc b/src/x87/macro-assembler-x87.cc
index ddea111f188d898dfd16f3d1c9599db1a2943784..6903c578c2df30959f830eccd9b45a31ed2e2982 100644
--- a/src/x87/macro-assembler-x87.cc
+++ b/src/x87/macro-assembler-x87.cc
@@ -25,8 +25,8 @@ MacroAssembler::MacroAssembler(Isolate* arg_isolate, void* buffer, int size)
       has_frame_(false) {
   if (isolate() != NULL) {
     // TODO(titzer): should we just use a null handle here instead?
-    code_object_ = Handle<Object>(isolate()->heap()->undefined_value(),
-                                  isolate());
+    code_object_ =
+        Handle<Object>::New(isolate()->heap()->undefined_value(), isolate());
   }
 }