BIND 10 #2950: suppress tautological-constant-out-of-range-compare warning of clang++

[BIND 10 Development]

#2950: suppress tautological-constant-out-of-range-compare warning of clang++
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            Reporter:  jinmei        |                        Owner:
                Type:  defect        |  UnAssigned
            Priority:  medium        |                       Status:  new
           Component:  build system  |                    Milestone:  Next-
            Keywords:                |  Sprint-Proposed
           Sensitive:  0             |                   Resolution:
         Sub-Project:  Core          |                 CVSS Scoring:
Estimated Difficulty:  0             |              Defect Severity:  N/A
         Total Hours:  0             |  Feature Depending on Ticket:
                                     |          Add Hours to Ticket:  0
                                     |                    Internal?:  0
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Comment (by muks):

 Is the fact that the `enum` is being compared for ordering? Will using
 `switch`, or rearranging code somehow help in such cases?

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Ticket URL: <http://bind10.isc.org/ticket/2950#comment:2>
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