NAME
       FreeColorMap -- Free the colormap structure and return memory
                                                to free memory pool.

   SYNOPSIS
       FreeColorMap( colormap )
                       a0

        void FreeColorMap(struct colormap *);

   FUNCTION
        Return the memory to the free memory pool that was allocated
        with getcolormap.

   INPUTS
        colormap - pointer to colormap allocated with getcolormap.

                  Passing a NULL pointer (meaning "do nothing") is
                  acceptable (V39).

   RESULT
        The space is made available for others to use.

   BUGS

   SEE ALSO
       setrgb4() getcolormap() graphics/view.h