From dae71aedd20af3eade4b8e0cb1dc68444a60c7ef Mon Sep 17 00:00:00 2001
From: Tom Gundersen <teg@jklm.no>
Date: Wed, 6 May 2015 17:36:39 +0200
Subject: udevd: worker - allow passing NULL to worker_unref()

Signed-off-by: Anthony G. Basile <blueness@gentoo.org>
---
 src/udev/udevd.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/src/udev/udevd.c b/src/udev/udevd.c
index 891e4c08b9..b921442337 100644
--- a/src/udev/udevd.c
+++ b/src/udev/udevd.c
@@ -153,8 +153,7 @@ static void worker_cleanup(struct worker *worker) {
 }
 
 static void worker_unref(struct worker *worker) {
-        worker->refcount--;
-        if (worker->refcount > 0)
+        if (!worker || (-- worker->refcount) > 0)
                 return;
         log_debug("worker ["PID_FMT"] cleaned up", worker->pid);
         worker_cleanup(worker);
-- 
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