cpdup bugfix

[Matthew Dillon]

:I noticed that cpdup sometimes doesn't remove files on the
:target that were removed on the source.  This is caused by
:a failure to reset the "node" variable to NULL in cpdup.c.
:
:This bug was accidentally introduced in cpdup v1.16 by me
:when I wrote the ScanDir() and IterateList() functions.
:I'm very sorry for that.
:
:Please apply the patch below.  It fixes the problem.
:
:Best regards
:   Oliver

    Committed!  Thanks Oliver.

					-Matt