XkbFreeGeomKeys man page

void XkbFreeGeomKeys (XkbRowPtr row, int first, int count, Bool free_all);

- row

row in which keys should be freed

- first

first key to be freed

- count

number of keys to be freed

- free_all

True => all keys are freed

If free_all is True, all keys are freed regardless of the value of first or count. Otherwise, count keys are freed beginning with the one specified by first.