fix bug ‘struct bts::bitname::name_record’ has no member named ‘pub_key’

/home/jeffrey/Git/keyhotee/AddressBook/ContactView.cpp: In member function ‘void ContactView::onSave()’:
/home/jeffrey/Git/keyhotee/AddressBook/ContactView.cpp:127:60: error: ‘struct bts::bitname::name_record’ has no member named ‘pub_key’
/home/jeffrey/Git/keyhotee/AddressBook/ContactView.cpp: In member function ‘void ContactView::lookupId()’:
/home/jeffrey/Git/keyhotee/AddressBook/ContactView.cpp:448:81: error: ‘struct bts::bitname::name_record’ has no member named ‘pub_key’

struct name_record not contain pub_key,I guess shuld be active_key.
name_record
BitShares/include/bts/bitname_record.hpp
struct name_record
  {
     name_record()
     :revoked(false),age(0),repute(0){}

     /** handle to/from hex conversion */
     uint64_t get_name_hash()const;
     void     set_name_hash( uint64_t h );

     fc::time_point_sec          last_update; ///< the most recent update of this name
     fc::ecc::public_key_data    master_key;  ///< the public key paired to this name.
     fc::ecc::public_key_data    active_key;  ///< the public key paired to this name.
     bool                        revoked;     ///< this name has been canceled, by its owner (invalidating the public key)
     uint32_t                    age;         ///< first block this name was registered in
     uint32_t                    repute;      ///< how many repute points have been earned by this name
     std::string                 name_hash;   ///< the unique hash assigned to this name, in hex format
     fc::optional<std::string>   name;        ///< if we know the name that generated the hash
  };