Fix wakeup for pivot relationships

Author: erikgaal

src/Illuminate/Database/Eloquent/Model.php

@@ -1408,10 +1408,12 @@ public function getQueueableRelations()
         $relations = [];
 
         foreach ($this->getRelations() as $key => $relation) {
-            if (method_exists($this, $key)) {
-                $relations[] = $key;
+            if (! method_exists($this, $key)) {
+                continue;
             }
 
+            $relations[] = $key;
+
             if ($relation instanceof QueueableCollection) {
                 foreach ($relation->getQueueableRelations() as $collectionValue) {
                     $relations[] = $key.'.'.$collectionValue;