From c6eda5f30f5fc545180ba8f374e193535930b55c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Martin=20Let=C3=A1=C4=8Dek?= <letynsoft@gmail.com>
Date: Sun, 28 Oct 2018 21:20:01 +0100
Subject: [PATCH] fix: Fix some possible notices

---
 src/DefinitionResolver.php | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/DefinitionResolver.php b/src/DefinitionResolver.php
index c1c7623..93d1967 100644
--- a/src/DefinitionResolver.php
+++ b/src/DefinitionResolver.php
@@ -514,8 +514,8 @@ class DefinitionResolver
                 break;
             } else {
                 $class = $this->index->getDefinition((string)$className);
-                if(!$class) {
-                    break;
+                if(!$class || empty($class->extends)) {
+                    return null;
                 }
                 $className = $class->extends[0];
             }