From add4e38c1c6e4ccc95bbb9eda700db5e27a947e4 Mon Sep 17 00:00:00 2001
From: Mateusz Nowak <kontakt@estshy.pl>
Date: Thu, 10 Jul 2014 18:00:46 +0200
Subject: [PATCH] Prevent from crashes when url doesn't exists

Cherry picked from 3655b79..0d62434
---
 lib/Addr/Client.php | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/lib/Addr/Client.php b/lib/Addr/Client.php
index 6ba8c6b..1b9d6d5 100644
--- a/lib/Addr/Client.php
+++ b/lib/Addr/Client.php
@@ -255,7 +255,10 @@ class Client
      */
     private function completePendingLookup($id, $addr, $type)
     {
-        call_user_func($this->pendingLookups[$id]['callback'], $addr, $type);
+        if (isset($this->pendingLookups[$id])) {
+            call_user_func($this->pendingLookups[$id]['callback'], $addr, $type);
+        }
+
         unset($this->pendingLookups[$id]);
     }