From 22ec9c0086fd6e5d8a0b66d6d66d360f9d6631f5 Mon Sep 17 00:00:00 2001
From: Alexander Ebert <ebert@woltlab.com>
Date: Tue, 26 Nov 2019 18:00:39 +0100
Subject: [PATCH] Compatibility with PHP 7.4

---
 .../files/lib/system/api/leafo/scssphp/src/Compiler.php        | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/wcfsetup/install/files/lib/system/api/leafo/scssphp/src/Compiler.php b/wcfsetup/install/files/lib/system/api/leafo/scssphp/src/Compiler.php
index 87fb8b2587..d547c1564a 100644
--- a/wcfsetup/install/files/lib/system/api/leafo/scssphp/src/Compiler.php
+++ b/wcfsetup/install/files/lib/system/api/leafo/scssphp/src/Compiler.php
@@ -2044,6 +2044,9 @@ class Compiler
      */
     protected function reduce($value, $inExp = false)
     {
+        if ($value === null) {
+            return $value;
+        }
 
         switch ($value[0]) {
             case Type::T_EXPRESSION:
-- 
2.20.1