From b1724378ec7614204d024967d0756dad73c69ea6 Mon Sep 17 00:00:00 2001
From: Chris Raby <chris.raby@netmatters.com>
Date: Mon, 15 Feb 2016 11:04:45 +0000
Subject: [PATCH] Resolve issue with "Undefined property: stdClass::$bytes"

---
 src/Fetch/Attachment.php | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/Fetch/Attachment.php b/src/Fetch/Attachment.php
index e77984a..39793b6 100644
--- a/src/Fetch/Attachment.php
+++ b/src/Fetch/Attachment.php
@@ -98,7 +98,9 @@ public function __construct(Message $message, $structure, $partIdentifier = null
             $this->setFileName($parameters['name']);
         }
 
-        $this->size = $structure->bytes;
+        if(isset($structure->bytes)){
+            $this->size = $structure->bytes;
+        }
 
         $this->mimeType = Message::typeIdToString($structure->type);