PRTL_SPLAY_LINKS
RtlRealSuccessor(
  IN  PRTL_SPLAY_LINKS Links
  );

Routine Description:

    The RealSuccessor function takes as input a pointer to a splay link
    in a tree and returns a pointer to the successor of the input node within
    the entire tree.  If there is not a successor, the return value is NULL.

Arguments:

    Links - Supplies a pointer to a splay link in a tree.

Return Value:

    PRTL_SPLAY_LINKS - returns a pointer to the successor in the entire tree