From c409dbf423d870ab26684cd6a6953c76c4a08d7f Mon Sep 17 00:00:00 2001
From: "Brian C. Lane" <bcl@redhat.com>
Date: Wed, 15 Feb 2023 10:04:36 -0800
Subject: filesys: Check for null from close_fn

If the filesystem type name isn't known it can return a NULL.
---
 libparted/fs/r/filesys.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/libparted/fs/r/filesys.c b/libparted/fs/r/filesys.c
index 9dafd71..6e795bc 100644
--- a/libparted/fs/r/filesys.c
+++ b/libparted/fs/r/filesys.c
@@ -198,8 +198,9 @@ ped_file_system_close (PedFileSystem* fs)
 {
        PED_ASSERT (fs != NULL);
        PedDevice *dev = fs->geom->dev;
+       close_fn_t fn = close_fn (fs->type->name);
 
-       if (!(close_fn (fs->type->name) (fs)))
+       if (!fn || !(fn (fs)))
                goto error_close_dev;
        ped_device_close (dev);
        return 1;
-- 
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