[symbol-listed-not-needed] matches on non-symbol listing

[jhauberg]

Well, basically, this is a problem because this rule does not play well with actual comments on #include directives... But anyway, in this example, we could probably deduce that this is not a symbol list due to it having no commas (e.g. not a list), and the only "symbol" found has whitespace (e.g. not the kind of symbol expected).