message: util: Remove probably misleading TODO
  The TODO has been added by me, but I don't remember how to solve it. The
  current code works fine, so just remove the TODO.
diff: @@ -46,7 +46,7 @@ class NonFatalCheckError : public std::runtime_error
  #error "Cannot compile without assertions!"
  #endif
  -/** Helper for Assert(). TODO remove in C++14 and replace `decltype(get_pure_r_value(val))` with `T` (templated lambda) */
  +/** Helper for Assert() */
  template <typename T>
  T get_pure_r_value(T&& val)
  {
  