gh-146152: Fix memory leak in _json encoder error paths#146164
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gh-146152: Fix memory leak in _json encoder error paths#146164okiemute04 wants to merge 1 commit intopython:mainfrom
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Only clean up markers on the RecursionError path (PATH B), where objects accumulate during stack unwinding. Other error paths are safe because the markers dict is local and will be freed. Based on review feedback from @raminfp and @serhiy-storchaka.
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Fixes #146152
Add PyDict_DelItem calls to remove objects from the markers dict
on all error paths in encoder_listencode_obj. Previously, objects
were only removed on the success path, causing memory leaks when:
_json: stale markers entries on error paths inencoder_listencode_obj#146152