Don't crash if NULL is passed as the class list to OpenThemeData().
[wine] / dlls / uxtheme / property.c
2004-02-20  Kevin KoltzauImplemented system metric functions.
2004-02-16  Kevin KoltzauImplement DrawThemeBackgroundEx, DrawThemeText, GetThem...
2004-01-23  Kevin KoltzauLoad properties from the theme ini.
2004-01-16  Kevin KoltzauAdd INI file processing.
2003-12-04  Kevin KoltzauAdded stubs for all functions.