From c752e8c0bebb2753adfe8bde93ec78a56bff5b64 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Herm=C3=A8s=20B=C3=A9lusca-Ma=C3=AFto?=
 <hermes.belusca-maito@reactos.org>
Date: Wed, 21 Feb 2024 18:32:19 +0100
Subject: [PATCH] [SETUPLIB] FindSupportedSystemPartition(): Add missing NULL
 check

Addendum to commit 59acff79e.
---
 base/setup/lib/utils/partlist.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/base/setup/lib/utils/partlist.c b/base/setup/lib/utils/partlist.c
index 6bb16fed9d4..f89bbe3b645 100644
--- a/base/setup/lib/utils/partlist.c
+++ b/base/setup/lib/utils/partlist.c
@@ -3346,6 +3346,11 @@ FindSupportedSystemPartition(
      * should be our system partition.
      */
     DiskEntry = GetSystemDisk(List);
+    if (!DiskEntry)
+    {
+        /* No system disk found, directly go check the alternative disk */
+        goto UseAlternativeDisk;
+    }
 
     if (DiskEntry->DiskStyle == PARTITION_STYLE_GPT)
     {