bug#31363: 26.1; Fix gud-statement for pdb

[Eli Zaretskii]

> From: Xu Chunyang <mail@xuchunyang.me>
> Cc: 31363@debbugs.gnu.org
> Date: Sun, 06 May 2018 19:57:21 +0800
> 
> Eli Zaretskii <eliz@gnu.org> writes:
> 
> >> From: Xu Chunyang <mail@xuchunyang.me>
> >> Date: Fri, 04 May 2018 19:47:15 +0800
> >> 
> >> I'm using Python 3.6.5. When I have selected a simple expression (such
> >> as 42) then run M-x gud-statement, it fails by saying
> >> 
> >> *** IndentationError: unexpected indent
> >> 
> >> The following changes fix the issue from here.
> >
> > Thanks.  Is the problem and the solution the same for Python 2.x?
> 
> Yes, I've checked both of them against Python 2.7.14.

Thanks, pushed to the release branch.