message: Use `auto` to deduce correct type
  Fixes MSVC warning about type conversion and possible loss of data.
diff: @@ -139,7 +139,7 @@ void TextField::onTextInput(const std::string& _s)
  if (mMaxCharacters > 0 && text().length() == mMaxCharacters) { return; }
  - int prvLen = text().length();
  + auto prvLen = text().length();
  if (mNumbersOnly && !std::isdigit(_s[0], LOC)) { return; }
  