BIND 10 #1666: in-memory iterator should include NSEC3 RRs

[BIND 10 Development]

#1666: in-memory iterator should include NSEC3 RRs
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            Reporter:  jinmei        |                        Owner:
                Type:  defect        |  UnAssigned
            Priority:  medium        |                       Status:
           Component:  data source   |  reviewing
            Keywords:                |                    Milestone:
           Sensitive:  0             |  Sprint-20131015
         Sub-Project:  DNS           |                   Resolution:
Estimated Difficulty:  5             |                 CVSS Scoring:
         Total Hours:  0             |              Defect Severity:  N/A
                                     |  Feature Depending on Ticket:
                                     |          Add Hours to Ticket:  0
                                     |                    Internal?:  0
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Changes (by muks):

 * owner:   => UnAssigned
 * status:  new => reviewing
 * milestone:   => Sprint-20131015


Comment:

 NSEC3 RRs do seem to be included, and their RRSIGs would be separated too
 if called with `separate_rrs=true`.

 I have reviewed this code carefully and it seems to be correctly done.
 Please can another pair of eyes review the `MemoryIterator` pedantically?

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Ticket URL: <http://bind10.isc.org/ticket/1666#comment:2>
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