Fix compiler warnings with Clang 6.0.0.

monero/src/cryptonote_protocol/block_queue.cpp:208:44: error:
      suggest braces around initialization of subobject [-Werror,-Wmissing-braces]
  static const boost::uuids::uuid uuid0 = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
                                           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
                                           {                                          }

monero/src/wallet/wallet_rpc_server.cpp:1895:43: error:
      lambda capture 'wal' is not used [-Werror,-Wunused-lambda-capture]
  tools::signal_handler::install([&wrpc, &wal](int) {
                                          ^

monero/src/cryptonote_protocol/cryptonote_protocol_handler.inl:1616:40: error:
      lambda capture 'arg' is not used [-Werror,-Wunused-lambda-capture]
    m_p2p->for_each_connection([this, &arg, &fluffy_arg, &exclude_context, &fullConnections...
                                       ^

monero/src/cryptonote_protocol/cryptonote_protocol_handler.inl:1616:46: error:
      lambda capture 'fluffy_arg' is not used [-Werror,-Wunused-lambda-capture]
    m_p2p->for_each_connection([this, &arg, &fluffy_arg, &exclude_context, &fullConnections...
                                             ^

monero/src/blockchain_utilities/blockchain_export.cpp:181:3: error:
      bool literal returned from 'main' [-Werror,-Wmain]
  CHECK_AND_ASSERT_MES(r, false, "Failed to initialize source blockchain storage");
  ^                       ~~~~~
monero/contrib/epee/include/misc_log_ex.h:180:97: note:
      expanded from macro 'CHECK_AND_ASSERT_MES'
  ...fail_ret_val, message)   do{if(!(expr)) {LOG_ERROR(message); return fail_ret_val;};}while(0)
                                                                  ^      ~~~~~~~~~~~~
monero/src/blockchain_utilities/blockchain_export.cpp:195:3: error:
      bool literal returned from 'main' [-Werror,-Wmain]
  CHECK_AND_ASSERT_MES(r, false, "Failed to export blockchain raw data");
  ^                       ~~~~~
monero/contrib/epee/include/misc_log_ex.h:180:97: note:
      expanded from macro 'CHECK_AND_ASSERT_MES'
  ...fail_ret_val, message)   do{if(!(expr)) {LOG_ERROR(message); return fail_ret_val;};}while(0)
                                                                  ^      ~~~~~~~~~~~~

1 files changed, 2 insertions, 2 deletions

diff --git a/src/blockchain_utilities/blockchain_export.cpp b/src/blockchain_utilities/blockchain_export.cpp
index b5284c471..60672eeda 100644
--- a/src/blockchain_utilities/blockchain_export.cpp
+++ b/src/blockchain_utilities/blockchain_export.cpp
@@ -178,7 +178,7 @@ int main(int argc, char* argv[])
   }
   r = core_storage->init(db, opt_testnet);
 
-  CHECK_AND_ASSERT_MES(r, false, "Failed to initialize source blockchain storage");
+  CHECK_AND_ASSERT_MES(r, 1, "Failed to initialize source blockchain storage");
   LOG_PRINT_L0("Source blockchain storage initialized OK");
   LOG_PRINT_L0("Exporting blockchain raw data...");
 
@@ -192,7 +192,7 @@ int main(int argc, char* argv[])
     BootstrapFile bootstrap;
     r = bootstrap.store_blockchain_raw(core_storage, NULL, output_file_path, block_stop);
   }
-  CHECK_AND_ASSERT_MES(r, false, "Failed to export blockchain raw data");
+  CHECK_AND_ASSERT_MES(r, 1, "Failed to export blockchain raw data");
   LOG_PRINT_L0("Blockchain raw data exported OK");
   return 0;