Make sure that submit event is still bound for regular form submit events....

Make sure that submit event is still bound for regular form submit events. Thanks to Mark Gibson for the fix suggestion.

src/event.js

@@ -604,6 +604,9 @@ jQuery.event.special.submit = {
 					return trigger( "submit", this, arguments );
 				}
 			});
+
+		} else {
+			return false;
 		}
 	},