Mashijams 62a64d0a43 xfs: make Directory Iterator class an abstract class
Directory Iterator class represents one instance which could be Short, Extent, Leaf, Node or B+Tree, a good case for making it an abstract class

Change-Id: I925255caf4c4f8bc01a975740ef2ebf0bb2e1b49
Reviewed-on: https://review.haiku-os.org/c/haiku/+/5764
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>
Reviewed-by: Adrien Destugues <pulkomandy@pulkomandy.tk>
2022-10-28 16:54:43 +00:00
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