For-of on null or undefined is an error

src/ia32/full-codegen-ia32.cc

Index: src/ia32/full-codegen-ia32.cc
diff --git a/src/ia32/full-codegen-ia32.cc b/src/ia32/full-codegen-ia32.cc
index 03ceab9a875c96ad374c1ce5fd39165bfd36f7c5..6aa2772853903b8d93120fb86a8a32b18caa8f26 100644
--- a/src/ia32/full-codegen-ia32.cc
+++ b/src/ia32/full-codegen-ia32.cc
@@ -1207,15 +1207,6 @@ void FullCodeGenerator::VisitForOfStatement(ForOfStatement* stmt) {
   Iteration loop_statement(this, stmt);
   increment_loop_depth();
 
-  // var iterable = subject
-  VisitForAccumulatorValue(stmt->assign_iterable());
-
-  // As with for-in, skip the loop if the iterator is null or undefined.
-  __ CompareRoot(eax, Heap::kUndefinedValueRootIndex);
-  __ j(equal, loop_statement.break_label());
-  __ CompareRoot(eax, Heap::kNullValueRootIndex);
-  __ j(equal, loop_statement.break_label());
-
   // var iterator = iterable[Symbol.iterator]();
   VisitForEffect(stmt->assign_iterator());