Goclient fix read close

[gmtstephane]

With the generated go client, the body response is read and closed inside the function, which is not returned. It is impossible to get the body from the returned value.
I suggest to not close the body and let the user do it with the returned value.

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[gmtstephane]

@antihax (2017/11) @grokify (2018/07) @kemokemo (2018/09) @bkabrda (2019/07)

[wing328]

Thanks for the PR but your commit (as shown in the Commits tab) is not linked to your Github account, which means this PR won't count as your contribution in https://github.com/OpenAPITools/openapi-generator/graphs/contributors.

Let me know if you need help fixing it.

Ref: https://github.com/OpenAPITools/openapi-generator/wiki/FAQ#how-can-i-update-commits-that-are-not-linked-to-my-github-account

[gmtstephane]

Im a sorry,
I created a new PR : #7041
I hope its ok now , i used the stackoverflow fix.