Fix for potential memory leak after putting to WeakObjectToCodeDependency table.

src/heap.cc

 // Copyright 2012 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 5638 matching lines @@
   }
   UNREACHABLE();
 }
 
 
 // TODO(ishell): Find a better place for this.
 void Heap::AddWeakObjectToCodeDependency(Handle<Object> obj,
                                          Handle<DependentCode> dep) {
   ASSERT(!InNewSpace(*obj));
   ASSERT(!InNewSpace(*dep));
+  HandleScope scope(isolate());
   Handle<WeakHashTable> table(WeakHashTable::cast(weak_object_to_code_table_),
                               isolate());
   table = WeakHashTable::Put(table, obj, dep);
 
   if (ShouldZapGarbage() && weak_object_to_code_table_ != *table) {
     WeakHashTable::cast(weak_object_to_code_table_)->Zap(the_hole_value());
   }
   set_weak_object_to_code_table(*table);
   ASSERT_EQ(*dep, table->Lookup(*obj));
 }
@@ skipping 986 matching lines @@
       static_cast<int>(object_sizes_last_time_[index]));
   CODE_AGE_LIST_COMPLETE(ADJUST_LAST_TIME_OBJECT_COUNT)
 #undef ADJUST_LAST_TIME_OBJECT_COUNT
 
   OS::MemCopy(object_counts_last_time_, object_counts_, sizeof(object_counts_));
   OS::MemCopy(object_sizes_last_time_, object_sizes_, sizeof(object_sizes_));
   ClearObjectStats();
 }
 
 } }  // namespace v8::internal