Sergey Biryukov 645f474fc0 Comments: Return early from comment_form() if an invalid post ID is passed.
If an invalid post ID is passed to the function, `comments_open()` should return `false`, and no comment form be displayed. This commit restores the previous behavior that was unintentionally changed when standardizing on the `$post` parameter name.

Follow-up to [53715].

Props peterwilsoncc.
Fixes #56243.

git-svn-id: https://develop.svn.wordpress.org/trunk@54488 602fd350-edb4-49c9-b593-d223f7449a82
2022-10-11 15:43:04 +00:00
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