From: Tom Gundersen <teg@jklm.no>
Date: Wed, 6 May 2015 15:36:39 +0000 (+0200)
Subject: udevd: worker - allow passing NULL to worker_unref()
X-Git-Tag: v220~185
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=c4fcf70a015e47ec894e1b9d0c1940caf652195b;p=thirdparty%2Fsystemd.git

udevd: worker - allow passing NULL to worker_unref()
---

diff --git a/src/udev/udevd.c b/src/udev/udevd.c
index 0458af13090..661047ea264 100644
--- a/src/udev/udevd.c
+++ b/src/udev/udevd.c
@@ -150,8 +150,7 @@ 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);