TST: Fix error in assert_produces_warning.
When I copied this over and sent to @cpcloud,
I thought the indentation was wrong and changed it.
Turned out I was wrong -- sorry about that!

Now all the doctests pass...

@jtratner which doc tests are u referring to?
 the doctests in assert_produces_warning. run `python -m doctest -v
pandas/util/testing.py` and you'll see what I mean.

On Sun, Jun 16, 2013 at 7:33 PM, Phillip Cloud notifications@github.comwrote:

> @jtratner https://github.com/jtratner which doc tests are u referring
> to?
> 
> —
> Reply to this email directly or view it on GitHubhttps://github.com/pydata/pandas/pull/3927#issuecomment-19521197
> .
 k this is good 2 go...any objections? @jreback ?
 ok
 cool so @jtratner rebase and i will merge
 @cpcloud I think this is actually up to date.
 thanks
