[Xmonad] darcs patch: catch exceptions when calling user-written code.

[Spencer Janssen]

On Thursday 11 October 2007 20:35:49 David Roundy wrote:
> This is an amended version of this patch (with its long comment
> modified to match), since sjanssen didn't like the whenJust
> catching.
>
> David
>
> Thu Oct 11 21:33:05 EDT 2007  David Roundy <droundy at darcs.net>
>   * catch exceptions when calling user-written code.
>   This is a minimal approach that only catches error
>   in actual user-written code.

Thanks for giving in to my demands :).  Applied.