Remove duplicate isolate

src/elements.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/v8.h"
 
 #include "src/arguments.h"
 #include "src/conversions.h"
 #include "src/elements.h"
 #include "src/messages.h"
@@ skipping 1318 matching lines @@
         }
       }
 
       // Update the number of elements.
       dict->ElementsRemoved(removed_entries);
     }
 
     if (length <= Smi::kMaxValue) {
       array->set_length(Smi::FromInt(length));
     } else {
-      Isolate* isolate = array->GetIsolate();
       Handle<Object> length_obj = isolate->factory()->NewNumberFromUint(length);
       array->set_length(*length_obj);
     }
   }
 
   static void DeleteCommon(Handle<JSObject> obj, uint32_t key,
                            LanguageMode language_mode) {
     Isolate* isolate = obj->GetIsolate();
     Handle<FixedArray> backing_store(FixedArray::cast(obj->elements()),
                                      isolate);
@@ skipping 438 matching lines @@
       break;
   }
 
   array->set_elements(*elms);
   array->set_length(Smi::FromInt(number_of_elements));
   return array;
 }
 
 }  // namespace internal
 }  // namespace v8