Add wp_verify_nonce() to auto-escaped funcs

This function only returns `false`, 1, or 2.

Though this function isn't generally `echo`ed, this list is also used by the [Validated/Sanitized Input Sniff](https://github.com/WordPress-Coding-Standards/WordPress-Coding-Standards/blob/20de02d447428c6befd95f6785b987b771242e83/WordPress/Sniffs/VIP/ValidatedSanitizedInputSniff.php#L158), and it is common to do something like `wp_verify_nonce( $_POST['nonce'], 'some_action' )`.

I've just replaced a duplicate `checked` that was out of alphabetical order.
Merge pull request #282 from JDGrimes/patch-2

Add wp_verify_nonce() to auto-escaped funcs