Draggable tests: Wrap IIFE in parens.

Author: scottgonzalez

tests/unit/draggable/draggable_test_helpers.js

@@ -2,10 +2,10 @@ TestHelpers.draggable = {
 	// TODO: remove the unreliable offset hacks
 	unreliableOffset: $.ui.ie && ( !document.documentMode || document.documentMode < 8 ) ? 2 : 0,
 	// Support: Opera 12.10, Safari 5.1, jQuery <1.8
-	unreliableContains: function(){
+	unreliableContains: (function(){
 		var element = $( "<div>" );
 		return $.contains( element[ 0 ].ownerDocument, element[ 0 ] );
-	}(),
+	})(),
 	testDrag: function( el, handle, dx, dy, expectedDX, expectedDY, msg ) {
 		var offsetAfter, actual, expected,
 			offsetBefore = el.offset();