Fix QSPI::isNull()

The method QSPI::isNull() should return false when QSPI is empty.

Tested on Winsows 8 and Linux with on-board, virtual and USB serial
ports using Qt5 and then Qt4.

Task-number: QTBUG-41262
Change-Id: Ic9e0afc5549311283aef7ec2ed841f5e418b7edf
Reviewed-by: Denis Shienkov <denis.shienkov@gmail.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/src/serialport/qserialportinfo.h b/src/serialport/qserialportinfo.h
index 262e54d..0c7a0f1 100644
--- a/src/serialport/qserialportinfo.h
+++ b/src/serialport/qserialportinfo.h
@@ -81,6 +81,7 @@ public:
     static QList<QSerialPortInfo> availablePorts();
 
 private:
+    QSerialPortInfo(const QSerialPortInfoPrivate &dd);
     friend QList<QSerialPortInfo> availablePortsByUdev();
     friend QList<QSerialPortInfo> availablePortsBySysfs();
     friend QList<QSerialPortInfo> availablePortsByFiltersOfDevices();