Bug#958242: Bug #958242: Use system libinih-dev

[Aron Xu]

ocserv uses a modified version[1] of inih, I wonder what would the
possibility of updating/merging these changes to system libinih-dev?

[1]https://gitlab.com/openconnect/ocserv/-/commit/92c31d1c02b49232b310177f7a6ec361c79880bf

Regards,
Aron