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Diffstat (limited to 'src/OAuth2/ClientAssertionType/HttpBasic.php')
-rw-r--r--src/OAuth2/ClientAssertionType/HttpBasic.php2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/OAuth2/ClientAssertionType/HttpBasic.php b/src/OAuth2/ClientAssertionType/HttpBasic.php
index ef61203..0d80071 100644
--- a/src/OAuth2/ClientAssertionType/HttpBasic.php
+++ b/src/OAuth2/ClientAssertionType/HttpBasic.php
@@ -112,7 +112,7 @@ class HttpBasic implements ClientAssertionTypeInterface
*
* @ingroup oauth2_section_2
*/
- public function getClientCredentials(RequestInterface $request, ResponseInterface $response = null)
+ public function getClientCredentials(RequestInterface $request, ?ResponseInterface $response = null)
{
if (!is_null($request->headers('PHP_AUTH_USER')) && !is_null($request->headers('PHP_AUTH_PW'))) {
return array('client_id' => $request->headers('PHP_AUTH_USER'), 'client_secret' => $request->headers('PHP_AUTH_PW'));