Fixed type error when req.socket is undefined

[cloetensbrecht]

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When req.socket is undefined a type error occured, this error is fixed within this pull request. Fixed error - uncaughtException: TypeError: Cannot read properties of undefined (reading 'destroyed')

[JoaoOtavioS]

Hey, good morning. I took the liberty of making a fork with almost 500 issues and 100 pull requests applied. If you want to check it out: https://github.com/squarecloudofc/http-proxy