net: Use BUG() instead of BUG_ON(1)

Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

net.c

@@ -233,7 +233,7 @@ static int restore_link(NetDeviceEntry *nde, int nlsk)
 		return restore_one_link(nde, nlsk, veth_link_info);
 	}
 
-	BUG_ON(1);
+	BUG();
 	return -1;
 }