[issue45126] [sqlite3] cleanup and harden Connection and Cursor __init__

[miss-islington]

miss-islington <mariatta.wijaya+miss-islington at gmail.com> added the comment:


New changeset 5d28bb699a305135a220a97ac52e90d9344a3004 by Miss Islington (bot) in branch '3.9':
[3.10] bpo-45126: Fix ref. leak in `sqlite3.Connection.__init__` (GH-28231). (GH-28298)
https://github.com/python/cpython/commit/5d28bb699a305135a220a97ac52e90d9344a3004


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<https://bugs.python.org/issue45126>
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