BIND 10 #1971: untested cases in RBtree previousNode

[BIND 10 Development]

#1971: untested cases in RBtree previousNode
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                   Reporter:         |                 Owner:  jinmei
  jinmei                             |                Status:  reviewing
                       Type:         |             Milestone:
  defect                             |  Sprint-20120529
                   Priority:         |            Resolution:
  medium                             |             Sensitive:  0
                  Component:  data   |           Sub-Project:  DNS
  source                             |  Estimated Difficulty:  0
                   Keywords:         |           Total Hours:  0
            Defect Severity:  N/A    |
Feature Depending on Ticket:         |
        Add Hours to Ticket:  0      |
                  Internal?:  0      |
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Comment (by jinmei):

 Replying to [comment:8 muks]:
 > jinmei: Can you run lcov on this branch and see if it's properly covered
 now? We are not able to run it ourselves.

 Done.
 http://bind10.isc.org/~jinmei/datasrc-lcov2/datasrc/rbtree.h.gcov.html

 Not examining the test code at all, but the lcov result looks okay.

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Ticket URL: <http://bind10.isc.org/ticket/1971#comment:9>
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