Fix incorrect outlining

In filetype `javascript`. Probably, filetype `cpp` would be the same.

### it's works fine.
```javascript
var f = function() {};
f.prototype.something = function() {};
```

this output is
```
Sources: outline (1/1)
> 
- something()
```

and this is also no problem.
```javascript


/**/
var f = function() {};
f.prototype.something = function() {};
```
### It's problem version.
```javascript
/**/
var f = function() {};
f.prototype.something = function() {};
```

this output is
```
Sources: outline
> 
```