Make order by not break older scout versions

Author: antriver

src/Engines/MySQLEngine.php

@@ -58,8 +58,10 @@ public function search(Builder $builder)
 
         $result['count'] = $query->count();
 
-        foreach ($builder->orders as $order) {
-            $query->orderBy($order['column'], $order['direction']);
+        if (property_exists($builder, 'orders') && !empty($builder->orders)) {
+            foreach ($builder->orders as $order) {
+                $query->orderBy($order['column'], $order['direction']);
+            }
         }
 
         if($builder->limit) {