Peter Wilson bb463b5265 Formatting: Prevent wp_targeted_link_rel() adding an empty attribute.
Bypass adding a `rel` attribute when the `wp_targeted_link_rel` filter returns an empty string or other falsy result.

Props mcmwebsol, spartank, meatman89fs.
Fixes #45352.


git-svn-id: https://develop.svn.wordpress.org/trunk@44691 602fd350-edb4-49c9-b593-d223f7449a82
2019-01-22 21:54:26 +00:00
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