Fix strict notice. see #22704.

Built from https://develop.svn.wordpress.org/trunk@25635


git-svn-id: http://core.svn.wordpress.org/trunk@25552 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Fix non-square rotations when using the Imagick image editor.

props DH-Shredder.
fixes #22663.

Built from https://develop.svn.wordpress.org/trunk@25636


git-svn-id: http://core.svn.wordpress.org/trunk@25553 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Merge branch 'master' of https://github.com/WordPress/WordPress