mem: fix __gc for openssl.provider

[zhaozg]

Description

Please provide a clear and concise description of your changes.

Related Issue

Fixes #(issue number)

Type of Change

• Bug fix
• New feature
• Documentation update
• Code review/analysis
• Performance improvement
• Code refactoring
• Other (please describe)

Changes Made

Please list the specific changes made in this PR:

Testing

Please describe the tests you ran to verify your changes:

• Existing tests pass
• Added new tests
• Manual testing performed

Checklist

• My code follows the style guidelines of this project (clang-format)
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published

OpenSSL Compatibility

Please indicate which OpenSSL versions were tested (if applicable):

• OpenSSL 1.0.2u
• OpenSSL 1.1.1w
• OpenSSL 3.0.x
• OpenSSL 3.5+
• LibreSSL 3.3.6+

Additional Notes

Add any other context about the pull request here.

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