Do not print a warning for the serialport closure if it is not open

This is necessary because end users will get a warning needlessly if the serial
port is not open when using the library.

There are two alternatives:

* Close in the destructor only if it is open.
* Do not print a warning.

The latter approach is more consistent with the other QIODevice subclasses, so
it is better to stick to that for now.

Change-Id: I918c203b1f5c52fba20de1373c298b8527a0e5a1
Reviewed-by: Denis Shienkov <denis.shienkov@gmail.com>
Reviewed-by: Sergey Belyashov <Sergey.Belyashov@gmail.com>

1 files changed, 0 insertions, 1 deletions

diff --git a/src/serialport/qserialport.cpp b/src/serialport/qserialport.cpp
index 04f2f9f..587e482 100644
--- a/src/serialport/qserialport.cpp
+++ b/src/serialport/qserialport.cpp
@@ -497,7 +497,6 @@ void QSerialPort::close()
     Q_D(QSerialPort);
     if (!isOpen()) {
         setError(QSerialPort::NotOpenError);
-        qWarning("%s: device not open", Q_FUNC_INFO);
         return;
     }