From 7df14502a208c8ae9ddc327ae6eba5cb17bda718 Mon Sep 17 00:00:00 2001
From: Gleb Popov <6yearold@gmail.com>
Date: Sun, 3 May 2026 13:37:19 +0300
Subject: [PATCH] Make udev_unref() handle NULL

This is what the real libudev does, see https://github.com/systemd/systemd/blob/a3502284def364235a9c31b016738607a75ddddc/src/libudev/libudev.c#L99-L100

There is code in the wild that depends on this behavior.
---
 udev.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/udev.c b/udev.c
index 92fadee..4a9e34b 100644
--- a/udev.c
+++ b/udev.c
@@ -76,6 +76,8 @@ LIBUDEV_EXPORT void
 udev_unref(struct udev *udev)
 {
 
+	if (!udev)
+		return;
 	TRC("(%p) refcount=%d", udev, udev->refcount);
 	_udev_unref(udev);
 }