[master] Build warnings. about libbitcoin-database HOT 3 CLOSED

  CXX      src/databases/src_libbitcoin_database_la-address_database.lo
src/verify.cpp:59:35: warning: unused parameter 'blocks' [-Wunused-parameter]
code verify(const block_database& blocks, const config::checkpoint& fork_point,
                                  ^
src/verify.cpp:59:69: warning: unused parameter 'fork_point'
      [-Wunused-parameter]
code verify(const block_database& blocks, const config::checkpoint& fork_point,
                                                                    ^
src/verify.cpp:60:10: warning: unused parameter 'candidate' [-Wunused-parameter]
    bool candidate)
         ^
src/verify.cpp:80:39: warning: unused parameter 'blocks' [-Wunused-parameter]
code verify_top(const block_database& blocks, size_t height, bool candidate)
                                      ^
src/verify.cpp:80:54: warning: unused parameter 'height' [-Wunused-parameter]
code verify_top(const block_database& blocks, size_t height, bool candidate)
                                                     ^
src/verify.cpp:80:67: warning: unused parameter 'candidate' [-Wunused-parameter]
code verify_top(const block_database& blocks, size_t height, bool candidate)
                                                                  ^
src/verify.cpp:91:42: warning: unused parameter 'blocks' [-Wunused-parameter]
code verify_exists(const block_database& blocks, const header& header)
                                         ^
src/verify.cpp:91:64: warning: unused parameter 'header' [-Wunused-parameter]
code verify_exists(const block_database& blocks, const header& header)
                                                               ^
src/verify.cpp:101:48: warning: unused parameter 'transactions'
      [-Wunused-parameter]
code verify_exists(const transaction_database& transactions,
                                               ^
src/verify.cpp:102:24: warning: unused parameter 'tx' [-Wunused-parameter]
    const transaction& tx)
                       ^
src/verify.cpp:124:40: warning: unused parameter 'blocks' [-Wunused-parameter]
code verify_push(const block_database& blocks, const header& header,
                                       ^
src/verify.cpp:124:62: warning: unused parameter 'header' [-Wunused-parameter]
code verify_push(const block_database& blocks, const header& header,
                                                             ^
src/verify.cpp:125:12: warning: unused parameter 'height' [-Wunused-parameter]
    size_t height)
           ^
src/verify.cpp:140:40: warning: unused parameter 'blocks' [-Wunused-parameter]
code verify_push(const block_database& blocks, const block& block,
                                       ^
src/verify.cpp:140:61: warning: unused parameter 'block' [-Wunused-parameter]
code verify_push(const block_database& blocks, const block& block,
                                                            ^
src/verify.cpp:141:12: warning: unused parameter 'height' [-Wunused-parameter]
    size_t height)
           ^
src/verify.cpp:158:43: warning: unused parameter 'blocks' [-Wunused-parameter]
code verify_confirm(const block_database& blocks, const hash_digest& block_hash,
                                          ^
src/verify.cpp:158:70: warning: unused parameter 'block_hash'
      [-Wunused-parameter]
code verify_confirm(const block_database& blocks, const hash_digest& block_hash,
                                                                     ^
src/verify.cpp:159:12: warning: unused parameter 'height' [-Wunused-parameter]
    size_t height)
           ^
src/verify.cpp:180:42: warning: unused parameter 'blocks' [-Wunused-parameter]
code verify_update(const block_database& blocks, const block& block,
                                         ^
src/verify.cpp:180:63: warning: unused parameter 'block' [-Wunused-parameter]
code verify_update(const block_database& blocks, const block& block,
                                                              ^
src/verify.cpp:181:12: warning: unused parameter 'height' [-Wunused-parameter]
    size_t height)
           ^
src/verify.cpp:197:46: warning: unused parameter 'blocks' [-Wunused-parameter]
code verify_not_failed(const block_database& blocks, const block& block)
                                             ^
src/verify.cpp:197:67: warning: unused parameter 'block' [-Wunused-parameter]
code verify_not_failed(const block_database& blocks, const block& block)
                                                                  ^
24 warnings generated.
  CXX      src/databases/src_libbitcoin_database_la-block_database.lo
src/databases/address_database.cpp:127:58: warning: unused parameter 'tx'
      [-Wunused-parameter]
void address_database::catalog(const chain::transaction& tx)
                                                         ^
1 warning generated.
  CXX      src/databases/src_libbitcoin_database_la-transaction_database.lo
src/databases/block_database.cpp:228:16: warning: unused variable 'link'
      [-Wunused-variable]
    const auto link = next.create(header.hash(), writer);
               ^
src/databases/block_database.cpp:426:16: warning: unused variable 'updated'
      [-Wunused-variable]
    const auto updated = index(element, true, candidate);
               ^
src/databases/block_database.cpp:446:16: warning: unused variable 'original'
      [-Wunused-variable]
    const auto original = index(element, false, candidate);
               ^
3 warnings generated.
  CXX      src/memory/src_libbitcoin_database_la-accessor.lo
src/databases/transaction_database.cpp:481:14: warning: unused variable
      'position' [-Wunused-variable]
    uint32_t position = 0;
             ^
1 warning generated.
  CXX      src/memory/src_libbitcoin_database_la-file_storage.lo
  CC       src/mman-win32/src_libbitcoin_database_la-mman.lo
  CXX      src/result/src_libbitcoin_database_la-address_iterator.lo
  CXX      src/result/src_libbitcoin_database_la-address_result.lo
  CXX      src/result/src_libbitcoin_database_la-block_result.lo
  CXX      src/result/src_libbitcoin_database_la-inpoint_iterator.lo
src/result/block_result.cpp:41:23: warning: unused variable 'tx_start_size'
      [-Wunused-const-variable]
static constexpr auto tx_start_size = sizeof(uint32_t);
                      ^
src/result/block_result.cpp:42:23: warning: unused variable 'tx_count_size'
      [-Wunused-const-variable]
static constexpr auto tx_count_size = sizeof(uint16_t);
                      ^
src/result/block_result.cpp:47:19: warning: unused variable
      'transactions_offset' [-Wunused-const-variable]
static const auto transactions_offset = checksum_offset + checksum_size;
                  ^
3 warnings generated.
  CXX      src/result/src_libbitcoin_database_la-transaction_iterator.lo