NAME
        FreeVec -- return allocvec() memory to the system  (v36)

   SYNOPSIS
        FreeVec(memoryBlock)
                A1

        void FreeVec(void *);

   FUNCTION
        Free an allocation made by the allocvec() call.  the memory will
        be returned to the system pool from which it came.

   NOTE
        If a block of memory is freed twice, the system will Guru. The
        alert is an_freetwice ($01000009).   if you pass the wrong pointer,
        you will probably see AN_MemCorrupt $01000005.  Future versions may
        add more sanity checks to the memory lists.

   INPUTS
        memoryBlock - pointer to the memory block to free, or NULL.

   SEE ALSO
        allocvec()