message: Util: fix GetNSSContents() compiler warning
diff: @@ -453,7 +453,7 @@ ArgumentStack Util::GetNSSContents(ArgumentStack&& args)
  if (scriptSourceFile.LoadScript(scriptName, &data, &size) == 0)
  {
  - retVal.assign(data, maxLength < 0 ? size : maxLength > size ? size : maxLength);
  + retVal.assign(data, maxLength < 0 ? size : (uint32_t)maxLength > size ? size : maxLength);
  scriptSourceFile.UnloadScript();
  }
  }
  