Simplify PackageLoader.load() using goto

https://xkcd.com/292/

Test Plan

It does not work (because of pytest?) :(

../../.local/lib/python3.7/site-packages/_pytest/assertion/rewrite.py:170: in exec_module
    exec(co, module.__dict__)
swh/loader/package/loader.py:144: in <module>
    class PackageLoader(BaseLoader, Generic[TPackageInfo]):
swh/loader/package/loader.py:469: in PackageLoader
    def load(self) -> Dict:
../../.local/lib/python3.7/site-packages/goto.py:184: in with_goto
    _patch_code(func_or_code.__code__),
../../.local/lib/python3.7/site-packages/goto.py:156: in _patch_code
    raise SyntaxError('Unknown label {0!r}'.format(code.co_names[label]))
E     File "<string>", line None
E   SyntaxError: Unknown label 'fail'

---

Migrated from D5351 (view on Phabricator)

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Patch application report for D5351 (id=19180)

Rebasing onto a32f6871...

Current branch diff-target is up to date.

Changes applied before test

commit 0d9cd075d42e7a866eb4e340931ea44b04f85478
Author: Valentin Lorentz <vlorentz@softwareheritage.org>
Date:   Fri Mar 26 12:22:35 2021 +0100

    Simplify PackageLoader.load() using goto
    
    https://xkcd.com/292/

Link to build: https://jenkins.softwareheritage.org/job/DLDBASE/job/tests-on-diff/449/ See console output for more information: https://jenkins.softwareheritage.org/job/DLDBASE/job/tests-on-diff/449/console

Merge request was abandoned

closed