New comment by unspecd on void-packages repository

https://github.com/void-linux/void-packages/issues/28061#issuecomment-763910243

Comment:
```
$ xbps-install -v -Mun
Found libstdc++-dbg-10.2.1pre1_1 in repository https://alpha.de.repo.voidlinux.org/current/musl/debug
Found removed-packages-0.1_13 in repository https://alpha.de.repo.voidlinux.org/current/musl
MISSING: libstdc++-10.2.1pre1_1
Transaction aborted due to unresolved dependencies.
```