BIND 10 #3112: boost::optional failure on Debian i686

[BIND 10 Development]

#3112: boost::optional failure on Debian i686
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            Reporter:  muks          |                        Owner:
                Type:  defect        |  vorner
            Priority:  high          |                       Status:
           Component:  libdns++      |  reviewing
            Keywords:                |                    Milestone:
           Sensitive:  0             |  Sprint-20130917
         Sub-Project:  DNS           |                   Resolution:
Estimated Difficulty:  3             |                 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:  muks => vorner


Comment:

 Hi Michal

 I simply removed the copy constructors (they were added in this branch) to
 use the default ones instead. Another commit to avoid unnecessary
 construction in two places was also pushed.

 Please can you review these?

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Ticket URL: <http://bind10.isc.org/ticket/3112#comment:14>
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