message: log: Move "Pre-allocating up to position 0x[...] in [...].dat" log message to debug category
diff: @@ -66,7 +66,7 @@ size_t FlatFileSeq::Allocate(const FlatFilePos& pos, size_t add_size, bool& out_
  if (CheckDiskSpace(m_dir, inc_size)) {
  FILE *file = Open(pos);
  if (file) {
  - LogPrintf("Pre-allocating up to position 0x%x in %s%05u.dat\n", new_size, m_prefix, pos.nFile);
  + LogPrint(BCLog::VALIDATION, "Pre-allocating up to position 0x%x in %s%05u.dat\n", new_size, m_prefix, pos.nFile);
  AllocateFileRange(file, pos.nPos, inc_size);
  fclose(file);
  return inc_size;
  