Syntax highlighting not working on comments on the end of a line of code.

When a comment is at the end of code, it is not greyed out. 
This is fine.

``` VB.net
'  Same as WScript.echo myEcho
sub wEcho( myEcho )
   WScript.echo myEcho
End Sub
```

This will not work. The VB.net parser here shows it is valid code.

``` VB.net
sub wEcho( myEcho )   '  Same as WScript.echo myEcho
   WScript.echo myEcho
End Sub
```
