From 246c1ec2421abef7eb2a060ad2b42982dde5affe Mon Sep 17 00:00:00 2001
From: David Lopez <desarrollo2.0@gmail.com>
Date: Thu, 15 Sep 2022 18:19:02 +0200
Subject: [PATCH] Ensure strlen is not called with NULL values to avoid a
 deprecation warning

---
 lib/Auth/OAuth.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/Auth/OAuth.php b/lib/Auth/OAuth.php
index fc963560..1ea8ca9a 100755
--- a/lib/Auth/OAuth.php
+++ b/lib/Auth/OAuth.php
@@ -522,7 +522,7 @@ protected function getQueryParameters($isPost, $parameters)
      */
     protected function isOauth1()
     {
-        return strlen($this->_request_token_url) > 0;
+        return !empty($this->_request_token_url) && strlen($this->_request_token_url) > 0;
     }
 
     /**