Add is_array check in IssueService::addAttachments

Add is_array check in \JiraRestApi\Issue\IssueService::addAttachments method

Author: say1hello

src/Issue/IssueService.php

@@ -133,10 +133,12 @@ public function addAttachments($issueIdOrKey, $filePathArray)
 
         $resArr = array();
         foreach ($results as $ret) {
-            array_push($resArr, $this->json_mapper->mapArray(
-               json_decode($ret), new \ArrayObject(), '\JiraRestApi\Issue\Attachment'
-                )
-            );
+            if (is_array($ret)) {
+                array_push($resArr, $this->json_mapper->mapArray(
+                   json_decode($ret), new \ArrayObject(), '\JiraRestApi\Issue\Attachment'
+                    )
+                );
+            }
         }
 
         return $resArr;