From 67678a989e49ff7bac0a79bf30c240c27f6f96d7 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Axel=20D=C3=B6rfler?= <axeld@pinc-software.de>
Date: Mon, 2 Aug 2010 21:17:33 +0000
Subject: [PATCH] * put_device_interface() now also accepts a NULL pointer.

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@37852 a95241bf-73f2-0310-859d-f6bbb57e9c96
---
 src/add-ons/kernel/network/stack/device_interfaces.cpp | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/src/add-ons/kernel/network/stack/device_interfaces.cpp b/src/add-ons/kernel/network/stack/device_interfaces.cpp
index a0b300d776..de97627ccc 100644
--- a/src/add-ons/kernel/network/stack/device_interfaces.cpp
+++ b/src/add-ons/kernel/network/stack/device_interfaces.cpp
@@ -357,13 +357,15 @@ list_device_interfaces(void* _buffer, size_t* bufferSize)
 void
 put_device_interface(struct net_device_interface* interface)
 {
+	if (interface == NULL)
+		return;
+
 	if (atomic_add(&interface->ref_count, -1) != 1)
 		return;
 
-	{
-		MutexLocker locker(sLock);
-		sInterfaces.Remove(interface);
-	}
+	MutexLocker locker(sLock);
+	sInterfaces.Remove(interface);
+	locker.Unlock();
 
 	uninit_fifo(&interface->receive_queue);
 	status_t status;