Fix meta

Let's fix tests.

```
[OK]d[  ]  meta: add comment                   
[OK]  meta: add comment                   
[OK]  meta: add comment at                
[OK]  meta: del comment                   
[OK]  meta: add two comment               
[OK]  meta: del comment at address        
[FX]  meta: multiline comment             
[OK]  meta: Cs : convert to string        
[BR]  meta: Cs : concatenated strings bug 
[BR]  meta: Cs : concatenated strings bug 
[OK]  meta: Cs : string count bug         
[OK]  meta: Ch : hide bytes in pd         
[OK]  meta: Ch : add/del hide bytes 
```