Bug#419344: Debconf script incorrectly returns an error on cancellation

[James Blanford <Xorguser@cox.net>]

Package: tzdata
Version: 2007e-3

When I run "dpkg-reconfigure tzdata" but decide to cancel the operation,
an error is returned:

echo $?
1

But there was no error.  I decided to cancel the operation and nothing
was changed.  That's a success.  It should have returned "0".

For example, if I run "dpkg-reconfigure debconf" and then select
"cancel":

echo $?
0