Free LDT Descriptor


                 This function  is used  to free  descriptors that  were
                 allocated  through   the   Allocate   LDT   Descriptors
                 function.

            To Call

                 AX = 0001h
                 BX = Selector to free

            Returns

                 If function was successful:
                 Carry flag is clear.

                 If function was not successful:
                 Carry flag is set.

            Programmer's Notes

                 o    Arrays of  descriptors are  freed by  calling this
                      function for each of the individual descriptors.
                 o    It is  valid to free the descriptors allocated for
                      the program's  initial CS,  DS,  and  SS.    Other
                      descriptors that  were not  allocated by  function
                      0000h should  never  be  freed  by  this  function
                      unless otherwise specified.