Fix the case where live change was breaking if a live click was bound…

… ahead of time. Very similar to #6359. Fixes #6505.

src/event.js

@@ -778,6 +778,7 @@ if ( !jQuery.support.changeBubbles ) {
 
 		if ( data != null || val ) {
 			e.type = "change";
+			e.liveFired = undefined;
 			return jQuery.event.trigger( e, arguments[1], elem );
 		}
 	};