message: html copy: fix null character in font face name
  Fixes
diff: @@ -1599,32 +1599,27 @@ float DxEngine::GetScaling() const noexcept
  // Get the locale name out so at least the caller knows what locale this name goes with.
  UINT32 length = 0;
  THROW_IF_FAILED(familyNames->GetLocaleNameLength(index, &length));
  + localeName.resize(length);
  // https://docs.microsoft.com/en-us/windows/win32/api/dwrite/nf-dwrite-idwritelocalizedstrings-getlocalenamelength
  // https://docs.microsoft.com/en-us/windows/win32/api/dwrite/nf-dwrite-idwritelocalizedstrings-getlocalename
  // GetLocaleNameLength does not include space for null terminator, but GetLocaleName needs it so add one.
  - length++;
  -
  - localeName.resize(length);
  -
  - THROW_IF_FAILED(familyNames->GetLocaleName(index, localeName.data(), length));
  + THROW_IF_FAILED(familyNames->GetLocaleName(index, localeName.data(), length + 1));
  }
  // OK, now that we've decided which family name and the locale that it's in... let's go get it.
  UINT32 length = 0;
  THROW_IF_FAILED(familyNames->GetStringLength(index, &length));
  - // https://docs.microsoft.com/en-us/windows/win32/api/dwrite/nf-dwrite-idwritelocalizedstrings-getstringlength
  - // https://docs.microsoft.com/en-us/windows/win32/api/dwrite/nf-dwrite-idwritelocalizedstrings-getstring
  - // Once again, GetStringLength is without the null, but GetString needs the null. So add one.
  - length++;
  -
  // Make our output buffer and resize it so it is allocated.
  std::wstring retVal;
  retVal.resize(length);
  // FINALLY, go fetch the string name.
  - THROW_IF_FAILED(familyNames->GetString(index, retVal.data(), length));
  + // https://docs.microsoft.com/en-us/windows/win32/api/dwrite/nf-dwrite-idwritelocalizedstrings-getstringlength
  + // https://docs.microsoft.com/en-us/windows/win32/api/dwrite/nf-dwrite-idwritelocalizedstrings-getstring
  + // Once again, GetStringLength is without the null, but GetString needs the null. So add one.
  + THROW_IF_FAILED(familyNames->GetString(index, retVal.data(), length + 1));
  // and return it.
  return retVal;
  