From 9a9c9e535c0ff70eab3f474f2c754cebb83a8759 Mon Sep 17 00:00:00 2001
From: Stephan Vock <stephan.vock@gmail.com>
Date: Wed, 9 Feb 2022 10:14:30 +0000
Subject: [PATCH] ComposerRepository: fix array_keys(): Argument #1 () must be
 of type array, null given

---
 src/Composer/Repository/ComposerRepository.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Composer/Repository/ComposerRepository.php b/src/Composer/Repository/ComposerRepository.php
index 0154a49a529e..df04d03c0140 100644
--- a/src/Composer/Repository/ComposerRepository.php
+++ b/src/Composer/Repository/ComposerRepository.php
@@ -657,7 +657,7 @@ private function getProviderNames()
             return array();
         }
 
-        if ($this->providersUrl) {
+        if ($this->providersUrl && null !== $this->providerListing) {
             return array_keys($this->providerListing);
         }