clone-indirect-buffer throws an error on a region.

Originally reported by: **Kris Jenkins (Bitbucket: [krisajenkins](https://bitbucket.org/krisajenkins), GitHub: [krisajenkins](https://github.com/krisajenkins))**

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`clone-indirect-buffer` throws an error when a region is selected.

## Versions ##
Emacs version: `GNU Emacs 24.3.1 (x86_64-apple-darwin12.2.0) of 2013-03-14 on teneight-slave .macports.org`

Evil version: `bad90df299ee01f679452cbf76807330d447a83f`

I use the macports version of emacs in the terminal, the http://emacsformacosx.com/ version on the GUI, and get the same error with both.

## Steps to reproduce ##
`make terminal`

Enter some text.

Visually select a region (charwise or linewise).

`M-x clone-indirect-buffer`

Get the error: `Error in post-command-hook (evil-visual-post-command): (error "Marker points into wrong buffer")`

## Additional Notes ##
Evil is *fantastic*. Thanks so much for writing it. :-)

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- Bitbucket: https://bitbucket.org/lyro/evil/issue/280