rem: return get_font_style(family, index, _name, NULL, _flags);
add: if (_name == NULL) return B_BAD_VALUE;  return sFontList.StyleAt(family, index, _name, _face, _flags);
context: get_font_style(font_family family, int32 index, font_style *_name,	uint32 *_flags){	return get_font_style(family, index, _name, NULL, _flags);}