Handle empty publish_place without erroring

[hornc]

Quick fix for #10901 if the original cause is empty publication places.

Closes #10901

Technical

Testing

I was able to import the 500ing record from the issue:

https://openlibrary.org/show-records/harvard_bibliographic_metadata/20220215_007.bib.mrc:35217684:1127

Importing to http://localhost:8080
ITEM: harvard_bibliographic_metadata
FILENAME: 20220215_007.bib.mrc
harvard_bibliographic_metadata/20220215_007.bib.mrc:35217684:5: 200 -- {'authors': [{'key': '/authors/OL12A', 'name': '滕昕雲', 'status': 'created'}], 'success': True, 'edition': {'key': '/books/OL11M', 'status': 'created'}, 'work': {'key': '/works/OL3W', 'status': 'created'}, 'next_record_offset': 35218811, 'next_record_length': 896}

[Copilot]

Pull Request Overview

The PR prevents errors when publish_place receives an empty or whitespace-only string by returning an empty string early.

• Added a guard clause in publish_place for blank inputs.
• Ensures the function no longer raises index errors on empty values.

Comments suppressed due to low confidence (1)

openlibrary/catalog/marc/parse.py:416

• Introduce a unit test for publish_place to cover cases where the input is empty or contains only whitespace, verifying that it returns an empty string without error.

if place == '':

[cdrini]

Confirmed https://testing.openlibrary.org/import/preview?source=marc:https://archive.org/download/harvard_bibliographic_metadata/20220215_007.bib.mrc:35217684 now preview imports without issue 👍