[Python-3000] Invalid \U escape in source code give hard-to-trace error

[Kurt B. Kaiser]

"Guido van Rossum" <guido at python.org> writes:

>> www.python.org/sf/1755885
>
> Thanks! Checked in, and merged into p3yk.

Thanks!

Unfortunately, I see there's an error from test_unicode.py, which I
neglected to re-run.  My apologies!

I've checked in a fix on the trunk and the buildbots are relatively
happy once more, it seems.

Should be caught in the next merge.

-- 
KBK