Warning with Qt QSerialPort program

I get the following Dr. Memory error. This might be a bug in Qt, but looking at http://code.qt.io/cgit/qt/qtserialport.git/tree/src/serialport/qserialportinfo_win.cpp I have not noticed anything particular.

```
Error #44: UNINITIALIZED READ: reading 0x02ff3e80-0x02ff3ea5 37 byte(s) within 0x02ff3e80-0x02ff3ea6
#0 system call NtWriteFile parameter #5
#1 KERNELBASE.dll!StrRStrIW +0x147 (0x76dd7c38 )
#2 Qt5SerialPortd.dll!QSerialPortInfo::productIdentifier+0x8ea0 (0x6508a829 )
#3 Qt5SerialPortd.dll!QSerialPortInfo::productIdentifier+0xa029 (0x6508b9b2 )
#4 Qt5SerialPortd.dll!QSerialPortInfo::productIdentifier+0x97bb (0x6508b144 )
#5 Qt5SerialPortd.dll!QSerialPortInfo::productIdentifier+0xa38f (0x6508bd18 )
#6 Qt5Cored.dll!uppercasebase +0x3227d7 (0x63f2faaf )
#7 Qt5Cored.dll!uppercasebase +0x315308 (0x63f225e0 )
#8 Qt5Cored.dll!uppercasebase +0x314e09 (0x63f220e1 )
#9 Qt5Cored.dll!uppercasebase +0x3f2fe1 (0x640002b9 )
#10 Qt5Cored.dll!uppercasebase +0x32c846 (0x63f39b1e )
#11 Qt5Cored.dll!uppercasebase +0x316913 (0x63f23beb )
#12 Qt5Cored.dll!uppercasebase +0x2d2834 (0x63edfb0c )
#13 Qt5Cored.dll!uppercasebase +0x2d3e9b (0x63ee1173 )
#14 Qt5Cored.dll!uppercasebase +0x2d087b (0x63eddb53 )
#15 Qt5Cored.dll!uppercasebase +0x2d1d04 (0x63edefdc )
#16 Qt5Cored.dll!uppercasebase +0x2da8a1 (0x63ee7b79 )
#17 Qt5Cored.dll!uppercasebase +0x3664ca (0x63f737a2 )
#18 Qt5Cored.dll!uppercasebase +0x2d2834 (0x63edfb0c )
#19 Qt5Cored.dll!uppercasebase +0x2d3e9b (0x63ee1173 )
Note: @0:00:40.820 in thread 9132
```