Fixing PHP warning message

main/inc/lib/online.inc.php

@@ -161,9 +161,8 @@ function who_is_online($valid, $friends = false) {
 	//This query will show all registered users. Only for dev purposes.
 	//$query = "SELECT DISTINCT u.user_id as login_user_id, login_date FROM ".$track_online_table ."  e , $table_user u GROUP by u.user_id  ORDER BY picture_uri DESC";
 	
-	$result = @Database::query($query);
-	//@todo why we dont believe in db query results?
-	if (count($result)>0) {
+	$result = Database::query($query);
+	if ($result) {
 		$rtime = time();
 		$rdate = date("Y-m-d H:i:s",$rtime);
 		$validtime = mktime(date("H"),date("i")-$valid,date("s"),date("m"),date("d"),date("Y"));