Merge pull request #7094 in SW/shopware from sw-22698/5.5/fix-typehints to 5.5

* commit '953dc3497eed5854d8717d0d763dbb0456112a3c':
  SW-22698 - Fix wrong type

Author: soebbing

engine/Shopware/Components/Api/Resource/CustomerStream.php

@@ -135,7 +135,7 @@ public function getOne($id = null, $offset = 0, $limit = null, $conditions, $sor
             $criteria->addCondition($condition);
         }
         $decodedSortings = json_decode($sortings, true);
-        if (!empty($sortings)) {
+        if (!empty($decodedSortings)) {
             /** @var SortingInterface[] $unserializedSortings */
             $unserializedSortings = $this->reflectionHelper->unserialize($decodedSortings, '');
 
@@ -412,12 +412,12 @@ public function updateFrozenState($streamId, \DateTime $freezeUp = null, $condit
     }
 
     /**
-     * @param int   $streamId
-     * @param array $conditions
+     * @param int        $streamId
+     * @param array|null $conditions
      *
      * @return array
      */
-    private function getConditions($streamId, array $conditions = [])
+    private function getConditions($streamId, $conditions = [])
     {
         if (!empty($conditions)) {
             return $this->reflectionHelper->unserialize(