| Index: src/x64/macro-assembler-x64.cc
 | 
| diff --git a/src/x64/macro-assembler-x64.cc b/src/x64/macro-assembler-x64.cc
 | 
| index 95b43f42a40c652c98ddfd511efb02f75c94a80f..7d5d6d3d0b10defc04d30d21a3c103bab7e53413 100644
 | 
| --- a/src/x64/macro-assembler-x64.cc
 | 
| +++ b/src/x64/macro-assembler-x64.cc
 | 
| @@ -2760,7 +2760,7 @@ void MacroAssembler::CompareMap(Register obj,
 | 
|        Map* current_map = *map;
 | 
|        while (CanTransitionToMoreGeneralFastElementsKind(kind, packed)) {
 | 
|          kind = GetNextMoreGeneralFastElementsKind(kind, packed);
 | 
| -        current_map = current_map->LookupElementsTransitionMap(kind, NULL);
 | 
| +        current_map = current_map->LookupElementsTransitionMap(kind);
 | 
|          if (!current_map) break;
 | 
|          j(equal, early_success, Label::kNear);
 | 
|          Cmp(FieldOperand(obj, HeapObject::kMapOffset),
 | 
| 
 |