clear openssl error stack as this causes to close database connection

[arunahk]

No description provided.

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[robertdimarco]

Ah, unfortunately, I can't accept any PRs without signing the license agreement. Sorry about that =/.

Feel free to re-open when you're ready to move forward with that.

[arunahk]

Sorry for the delayed response.
I signed it!

I did a pull request again under #104