traversing: Don't pass a plain array to makeArray

In case of a node, the array is obviously an array already as it
is created right there on the same line.
traversing: Don't pass an object to both makeArray and jQuery.merge

The selector can be an array or array-like object here
(e.g. NodeList/jQuery etc.). In that case jQuery.merge already
takes care of turning it into an array, no need to do apply first
(in fact, makeArray calls jQuery.merge internally).