An extra `}` is added if there's a comment with an odd number of `"`

[wtfsck]

Describe the bug

An extra } is added when the following code is formatted

To Reproduce

Format this

enum X {
    A,
    /*"*/
}

This is the result:

enum X {
    A,
    /*"*/
    }
}

Expected behavior

Input does not change or at most the comment is moved but no extra } should be added

Meta

• rustfmt version: rustfmt 1.4.36-stable (7de6968 2021-02-07)
• From where did you install rustfmt?: rustup
• How do you run rustfmt: cargo fmt

[calebcartwright]

Thank you for the report but going to close as a duplicate of a few previous issues (e.g. #4744)