New issue by tleydxdy on void-packages repository

https://github.com/void-linux/void-packages/issues/18818

Description:
<!-- Don't request update of package. We have a script for that. https://alpha.de.repo.voidlinux.org/void-updates/void-updates.txt . However, a quality pull request may help. -->
### System

* xuname:  
  `Void 5.4.17_1 x86_64-musl GenuineIntel uptodate rrnFFF`
* package:  
  `openssh-8.1p1_2`

### Expected behavior
Build pass
### Actual behavior
Build error at 
```
sftp-server.c:869
sftp-server.c:1341
```
because of `-Werror=format-overflow=`
### Steps to reproduce the behavior
`./xbps-src -N pkg openssh`