can't disable multiple rules with disable-enable-pair.allowWholeFile

source
```js
/*eslint-disable no-unused-var, no-undef */
var foo = bar()
```

output
```
1:33  error  Requires 'eslint-enable' directive for 'no-undef'  eslint-comments/disable-enable-pair
```

repro
https://github.com/teppeis-sandbox/eslint-comments-repro