...instead of prefix match as the use of
compareToAscii(RTL_CONSTASCII_STRINGPARAM(...)) prior to
b380744c "Remove some RTL_* and some rtl::
prefixes in chart2" would have suggested.  But the only two clients of
com.sun.star.comp.chart2.WizardDialog that I could find
(sc/source/ui/drawfunc/fuins2.cxx, sw/source/ui/table/chartins.cxx) indeed only
use "ChartModel" and "ParentWindow".

Change-Id: I0553c2c9648959ed558afb4f6cdea0e15a29cb9e