Style/Next cop throws an exception when autocorrectting

[tobypinder]

This cop specifically seems to consistently throw an exception while autocorrecting.

It works fine without --auto-correct

  ➜  rubocop --only Style/Next               

  11  Style/Next
  --
  11  Total

But with, it throws exception.

  ➜  rubocop --only Style/Next --auto-correct

  --
  0  Total

  undefined method `end_pos' for nil:NilClass
  /home/toby/.rvm/rubies/ruby-2.3.0/lib/ruby/gems/2.3.0/gems/rubocop-0.36.0/lib/rubocop/cop/style/next.rb:135:in `end_range'
  /home/toby/.rvm/rubies/ruby-2.3.0/lib/ruby/gems/2.3.0/gems/rubocop-0.36.0/lib/rubocop/cop/style/next.rb:118:in `block in autocorrect'
  /home/toby/.rvm/rubies/ruby-2.3.0/lib/ruby/gems/2.3.0/gems/rubocop-0.36.0/lib/rubocop/cop/corrector.rb:47:in `block in rewrite'
  /home/toby/.rvm/rubies/ruby-2.3.0/lib/ruby/gems/2.3.0/gems/rubocop-0.36.0/lib/rubocop/cop/corrector.rb:46:in `each'
  /home/toby/.rvm/rubies/ruby-2.3.0/lib/ruby/gems/2.3.0/gems/rubocop-0.36.0/lib/rubocop/cop/corrector.rb:46:in `rewrite'
  /home/toby/.rvm/rubies/ruby-2.3.0/lib/ruby/gems/2.3.0/gems/rubocop-0.36.0/lib/rubocop/cop/team.rb:91:in `autocorrect_one_cop'
  /home/toby/.rvm/rubies/ruby-2.3.0/lib/ruby/gems/2.3.0/gems/rubocop-0.36.0/lib/rubocop/cop/team.rb:68:in `autocorrect'
  /home/toby/.rvm/rubies/ruby-2.3.0/lib/ruby/gems/2.3.0/gems/rubocop-0.36.0/lib/rubocop/cop/team.rb:39:in `inspect_file'
  /home/toby/.rvm/rubies/ruby-2.3.0/lib/ruby/gems/2.3.0/gems/rubocop-0.36.0/lib/rubocop/runner.rb:194:in `inspect_file'
  /home/toby/.rvm/rubies/ruby-2.3.0/lib/ruby/gems/2.3.0/gems/rub
➜  ocop-0.36.0/lib/rubocop/runner.rb:164:in `block in do_inspection_loop'
  /home/toby/.rvm/rubies/ruby-2.3.0/lib/ruby/gems/2.3.0/gems/rubocop-0.36.0/lib/rubocop/runner.rb:158:in `loop'
  /home/toby/.rvm/rubies/ruby-2.3.0/lib/ruby/gems/2.3.0/gems/rubocop-0.36.0/lib/rubocop/runner.rb:158:in `do_inspection_loop'
  /home/toby/.rvm/rubies/ruby-2.3.0/lib/ruby/gems/2.3.0/gems/rubocop-0.36.0/lib/rubocop/runner.rb:87:in `process_file'
  /home/toby/.rvm/rubies/ruby-2.3.0/lib/ruby/gems/2.3.0/gems/rubocop-0.36.0/lib/rubocop/runner.rb:59:in `block in inspect_files'
  /home/toby/.rvm/rubies/ruby-2.3.0/lib/ruby/gems/2.3.0/gems/rubocop-0.36.0/lib/rubocop/runner.rb:57:in `each'
  /home/toby/.rvm/rubies/ruby-2.3.0/lib/ruby/gems/2.3.0/gems/rubocop-0.36.0/lib/rubocop/runner.rb:57:in `inspect_files'
  /home/toby/.rvm/rubies/ruby-2.3.0/lib/ruby/gems/2.3.0/gems/rubocop-0.36.0/lib/rubocop/runner.rb:35:in `run'
  /home/toby/.rvm/rubies/ruby-2.3.0/lib/ruby/gems/2.3.0/gems/rubocop-0.36.0/lib/rubocop/cli.rb:30:in `run'
  /home/toby/.rvm/gems/ruby-2.3.0@global/gems/rubocop-0.36.0/bin/rubocop:14:in `block in <top (required)>'
  /home/toby/.rvm/rubies/ruby-2.3.0/lib/ruby/2.3.0/benchmark.rb:308:in `realtime'
  /home/toby/.rvm/gems/ruby-2.3.0@global/gems/rubocop-0.36.0/bin/rubocop:13:in `<top (required)>'
  /home/toby/.rvm/gems/ruby-2.3.0@cerebro/bin/rubocop:23:in `load'
  /home/toby/.rvm/gems/ruby-2.3.0@cerebro/bin/rubocop:23:in `<main>'
  /home/toby/.rvm/gems/ruby-2.3.0@cerebro/bin/ruby_executable_hooks:15:in `eval'
  /home/toby/.rvm/gems/ruby-2.3.0@cerebro/bin/ruby_executable_hooks:15:in `<main>'

This seems to happen every time for me, but just to be sure it can be reliably produced when running Rubocop on the following test code

module RubocopNextExample
  def do_things(things)
    things.each do |thing|
      fail "Lorem Ipsum" unless thing.include?('foo')
    end
  end
end

System

➜  rubocop -V
0.36.0 (using Parser 2.3.0.1, running on ruby 2.3.0 x86_64-linux)
➜  ruby -v   
ruby 2.3.0p0 (2015-12-25 revision 53290) [x86_64-linux]