message: test: refactor: declare NoMalleation const auto
  To avoid linker error on some platforms:
diff: #include <boost/test/unit_test.hpp>
  -auto NoMalleation = [](CAutoFile& file, SnapshotMetadata& meta){};
  +const auto NoMalleation = [](CAutoFile& file, SnapshotMetadata& meta){};
  /**
  * Create and activate a UTXO snapshot, optionally providing a function to
  