Position: Fix orientation check for scrollbar widths. Fixes #8763 - Position: getScrollInfo() swapped width and height.

Author: scottgonzalez

ui/jquery.ui.position.js

@@ -95,8 +95,8 @@ $.position = {
 			hasOverflowY = overflowY === "scroll" ||
 				( overflowY === "auto" && within.height < within.element[0].scrollHeight );
 		return {
-			width: hasOverflowX ? $.position.scrollbarWidth() : 0,
-			height: hasOverflowY ? $.position.scrollbarWidth() : 0
+			width: hasOverflowY ? $.position.scrollbarWidth() : 0,
+			height: hasOverflowX ? $.position.scrollbarWidth() : 0
 		};
 	},
 	getWithinInfo: function( element ) {