Script error running CON55-CPP

```
  File ""/Foo/understand/scitools/conf/plugin/SciTools/CodeCheck/Published Standards/SEI Cert Standards/C++/CON55-CPP/check.upy"", line 114, in check
    lex = lex.next().next()
          ^^^^^^^^
AttributeError: 'NoneType' object has no attribute 'next'
```