dojo.marginBox(), dojo.contentBox() doesn't always return size

[bill]

Judging from the code of dojo.marginBox(), it's supposed to return a size:

	dojo.marginBox = function(node, boxObj){
		...
		return !b ? dojo._getMarginBox(node, s) : dojo._setMarginBox(node, b.l, b.t, b.w, b.h, s);
	}

However, dojo._setMarginBox() doesn't return anything.

Same issue for dojo.contentBox()

[sjmiles]

dojo.marginBox and dojo.contentBox are two-for-one functions. Each one is a getter if you pass one argument and a setter if you pass two. The setter version returns nothing.