Fix compilation after 73980ae4a19d.

src/objects-printer.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/objects.h"
 
 #include <iomanip>
 #include <memory>
 
 #include "src/bootstrapper.h"
@@ skipping 706 matching lines @@
     std::ostream& os) {  // NOLINT
   HeapObject::PrintHeader(os, "TypeFeedbackMetadata");
   os << "\n - length: " << length();
   if (length() == 0) {
     os << " (empty)\n";
     return;
   }
   os << "\n - slot_count: " << slot_count();
 
   TypeFeedbackMetadataIterator iter(this);
-  int parameter_index = 0;
   while (iter.HasNext()) {
     FeedbackVectorSlot slot = iter.Next();
     FeedbackVectorSlotKind kind = iter.kind();
     os << "\n Slot " << slot << " " << kind;
   }
   os << "\n";
 }
 
 
 void TypeFeedbackVector::Print() {
   OFStream os(stdout);
   TypeFeedbackVectorPrint(os);
   os << std::flush;
 }
 
 
 void TypeFeedbackVector::TypeFeedbackVectorPrint(std::ostream& os) {  // NOLINT
   HeapObject::PrintHeader(os, "TypeFeedbackVector");
   os << "\n - length: " << length();
   if (length() == 0) {
     os << " (empty)\n";
     return;
   }
 
-  int parameter_index = 0;
   TypeFeedbackMetadataIterator iter(metadata());
   while (iter.HasNext()) {
     FeedbackVectorSlot slot = iter.Next();
     FeedbackVectorSlotKind kind = iter.kind();
 
     os << "\n Slot " << slot << " " << kind;
     os << " ";
     switch (kind) {
       case FeedbackVectorSlotKind::LOAD_IC: {
         LoadICNexus nexus(this, slot);
@@ skipping 952 matching lines @@
     printf("Not a transition array\n");
   } else {
     reinterpret_cast<i::TransitionArray*>(object)->Print();
   }
 }
 
 extern void _v8_internal_Print_StackTrace() {
   i::Isolate* isolate = i::Isolate::Current();
   isolate->PrintStack(stdout);
 }