message: Add tolower_char(char)->char. Avoids C4244 for char<->int conversion
diff: @@ -9,6 +9,11 @@ namespace vcpkg::Strings::details
  return std::isspace(c);
  };
  + static char tolower_char(const char c)
  + {
  + return static_cast<char>(std::tolower(c));
  + }
  +
  std::string format_internal(const char* fmtstr, ...)
  {
  va_list lst;
  @@ -53,17 +58,17 @@ namespace vcpkg::Strings
  std::string::const_iterator case_insensitive_ascii_find(const std::string& s, const std::string& pattern)
  {
  std::string pattern_as_lower_case;
  - std::transform(pattern.begin(), pattern.end(), back_inserter(pattern_as_lower_case), tolower);
  + std::transform(pattern.begin(), pattern.end(), back_inserter(pattern_as_lower_case), &details::tolower_char);
  return search(s.begin(), s.end(), pattern_as_lower_case.begin(), pattern_as_lower_case.end(), [](const char a, const char b)
  {
  - return tolower(a) == b;
  + return details::tolower_char(a) == b;
  });
  }
  std::string ascii_to_lowercase(const std::string& input)
  {
  - std::string output = input;
  - std::transform(output.begin(), output.end(), output.begin(), ::tolower);
  + std::string output(input);
  + std::transform(output.begin(), output.end(), output.begin(), &details::tolower_char);
  return output;
  }
  