From c5ce4de89eb58c17e1a0ac331b904afc02da2dfb Mon Sep 17 00:00:00 2001
From: Jordi Boggiano <j.boggiano@seld.be>
Date: Fri, 28 Feb 2020 22:27:53 +0100
Subject: [PATCH] Consistently return void

---
 src/Composer/Util/Filesystem.php | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/Composer/Util/Filesystem.php b/src/Composer/Util/Filesystem.php
index e305b03b5..008ed584a 100644
--- a/src/Composer/Util/Filesystem.php
+++ b/src/Composer/Util/Filesystem.php
@@ -310,7 +310,9 @@ class Filesystem
         }
 
         if (!function_exists('proc_open')) {
-            return $this->copyThenRemove($source, $target);
+            $this->copyThenRemove($source, $target);
+            
+            return;
         }
 
         if (Platform::isWindows()) {