Merge pull request bshaffer#336 from ruimarinho/patch-1

Fixed Redis delete command

Author: bshaffer

src/OAuth2/Storage/Redis.php

@@ -83,7 +83,7 @@ protected function expireValue($key)
     {
         unset($this->cache[$key]);
 
-        return $this->redis->delete($key);
+        return $this->redis->del($key);
     }
 
     /* AuthorizationCodeInterface */