Removing empty query validation on value change

Removing empty query validation on value change, so I can set 'minChars' to 0 and show suggestions when the user click on input.

Exemple:

var $autocomplete = new $.Autocomplete($('#wishlist_name')[0], {
	lookup: wishlist_types,
	minChars: 0,
});

$('#wishlist_name').focus(function(){
	$autocomplete.onValueChange();
});