NFScodeDependency fails for small example

[Martin Sjölund]

From ​https://openmodelica.org/forum/default-topic/2427-1024-error-messages:

package battery
  model Converter
  end Converter;
end battery;

model M
  battery.Converter battery;
end M;

This causes a stack overflow.

[Per Östlund]

The model correctly gives an error when using the new frontend, and it doesn't seem very important to fix in the old frontend since it only affects invalid models.