Fix code generator example.
Fix code generator example.

qMetaTypeConstructHelper(const T*) is a private api which was changed to
qMetaTypeCreateHelper(const void*).

Change-Id: I81e434cef9b1f15eadcb6e2f2d28eb979274ed64
Reviewed-by: Jędrzej Nowacki <2a36f1173c454f1cee5cc6ee35c017a292b3c0df@nokia.com>

kobolabs/qtactiveqt,xsens/qtactiveqt,xsens/qtactiveqt,kobolabs/qtactiveqt