[Urwid] Problem with Text widgets & leading spaces

[Rebecca Breu]

> I've attached a fix for urwid/util.py, and I've tested it with your
> program and an xterm at 3, 2 and 1 column wide. This change will be
> included in 0.9.3.

The patch works fine.

>
> Thanks for the bug report!
>

Thank *you* for Urwid! :-)

Rebecca