Delete the startAsyncWriteTimer object on close

There are no sense to keep the startAsyncWriteTimer object
when the device is closed. Because in next time the device
can be opened in read-only mode, and the startAsyncWriteTimer
will never used.

(cherry-picked from c0aebf3dfe3c6837db8f91d65ac4b6b7b44e100e)
Change-Id: I315ddfa88517087dcf708b0057a0e7c27cb1a3f1
Reviewed-by: Denis Shienkov <denis.shienkov@gmail.com>

1 files changed, 5 insertions, 0 deletions

diff --git a/src/serialport/qserialport_win.cpp b/src/serialport/qserialport_win.cpp
index 73f9bab..e70fd8d 100644
--- a/src/serialport/qserialport_win.cpp
+++ b/src/serialport/qserialport_win.cpp
@@ -168,6 +168,11 @@ void QSerialPortPrivate::close()
         writeCompletionNotifier = Q_NULLPTR;
     }
 
+    if (startAsyncWriteTimer) {
+        delete startAsyncWriteTimer;
+        startAsyncWriteTimer = Q_NULLPTR;
+    }
+
     readStarted = false;
     readBuffer.clear();