Retooled the arguments.callee-related changes in 98ce35d52b to avoid re-declarations where possible.

src/event.js

@@ -37,13 +37,20 @@ jQuery.event = {
 
 		// Init the element's event structure
 		var events = jQuery.data( elem, "events" ) || jQuery.data( elem, "events", {} ),
-			handle = jQuery.data( elem, "handle" ) || jQuery.data( elem, "handle", function eventHandle() {
+			handle = jQuery.data( elem, "handle" ), eventHandle;
+
+		if ( !handle ) {
+			eventHandle = function() {
 				// Handle the second event of a trigger and when
 				// an event is called after a page has unloaded
 				return typeof jQuery !== "undefined" && !jQuery.event.triggered ?
 					jQuery.event.handle.apply( eventHandle.elem, arguments ) :
 					undefined;
-			});
+			};
+
+			handle = jQuery.data( elem, "handle", eventHandle );
+		}
+
 		// Add elem as a property of the handle function
 		// This is to prevent a memory leak with non-native
 		// event in IE.