NAME
        DeleteStdIO - return memory allocated for iostdreq

   SYNOPSIS
        DeleteStdIO(ioReq);

        VOID DeleteStdIO(struct iostdreq *);

   FUNCTION
        Frees up an iostdreq as allocated by createstdio().

   INPUTS
        ioReq - the iorequest block to be freed, or null.

   SEE ALSO
        createstdio(), deleteextio(), exec.library/createiorequest()