From 0bbeeac4d50f7dc25dd399477bc56ccea836e835 Mon Sep 17 00:00:00 2001
From: Generoso Martello <generoso@martello.com>
Date: Tue, 18 Aug 2015 20:43:32 +0200
Subject: [PATCH] small fix to reader task disposing

---
 SerialPortLib/SerialPort.cs | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/SerialPortLib/SerialPort.cs b/SerialPortLib/SerialPort.cs
index 193f65b..95b821b 100644
--- a/SerialPortLib/SerialPort.cs
+++ b/SerialPortLib/SerialPort.cs
@@ -103,7 +103,8 @@ public void Disconnect()
             {
                 watcherTokenSource.Cancel();
                 connectionWatcher.Wait(5000);
-                connectionWatcher.Dispose();
+                if (connectionWatcher != null)
+                    connectionWatcher.Dispose();
                 connectionWatcher = null;
                 watcherTokenSource = null;
             }
@@ -224,7 +225,8 @@ private void Close()
             {
                 readerTokenSource.Cancel();
                 readerTask.Wait(5000);
-                readerTask.Dispose();
+                if (readerTask != null)
+                    readerTask.Dispose();
                 readerTask = null;
                 readerTokenSource = null;
             }