Fixing makeHeaderObj checking wrong param for false

[johanhermansson]

Value should be checked for false. This fixes frameOptions: false not working

[ivajo26]

I need this change 😃

[johanhermansson]

I need this change 😃

@ivajo26 You could bypass the problem by intermediate storing the nextSafe function results in a variable and filter out the X-Frame-Options from the array.

const headers = nextSafe();

module.exports = {
    async headers() {
        return [
            source: '/:path*',
            headers: headers.filter(({ key }) => key !== 'X-Frame-Options')
        ];
    }
};

[github-actions[bot]]

:tada: This PR is included in version 3.3.0 :tada:

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• npm package (@latest dist-tag)
• GitHub release

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