Script error running VNA05-J

```
File ""/Foo/understand/scitools/conf/plugin/SciTools/CodeCheck/Published Standards/SEI Cert Standards/Java/VNA05-J/check.upy"", line 89, in check
    define_ref.line(), define_ref.column())
    ^^^^^^^^^^^^^^^
AttributeError: 'NoneType' object has no attribute 'line'
```