Ensure that a category is part of the query before redirecting permalink...

Ensure that a category is part of the query before redirecting permalink structures containing %category%. Fixes #19241.

This fixes incorrect canonical redirects for singular queries using custom rewrite rules.


git-svn-id: https://core.svn.wordpress.org/trunk@19970 1a063a9b-81f0-0310-95a4-ce76da25c4cd