NSIndexPath specs fail on 10.9

[clayallsopp]

with extra puts:

NSIndexPathWrap
  - should be able to use an array like accessor [ERROR: NoMethodError - undefined method `indexAtPosition' for 826:Fixnum]
  - should support the each iterator
  @index: #<ImmediateRef:0x7f889bebc3a0>
   self: 0+826i
 [ERROR: NoMethodError - undefined method `length' for 826:Fixnum]

NoMethodError: undefined method `indexAtPosition' for 826:Fixnum
    ns_index_path.rb:8:in `[]:': NSIndexPathWrap - should be able to use an array like accessor
    spec.rb:316:in `block in run_spec_block'
    spec.rb:440:in `execute_block'
    spec.rb:316:in `run_spec_block'
    spec.rb:331:in `run'

NoMethodError: undefined method `length' for 826:Fixnum
    ns_index_path.rb:17:in `each': NSIndexPathWrap - should support the each iterator
    spec.rb:316:in `block in run_spec_block'
    spec.rb:440:in `execute_block'
    spec.rb:316:in `run_spec_block'
    spec.rb:331:in `run'