init: make some functions static

init: make some functions static

A bunch of functions are defined and used within init.c only.
We can therefore drop their declaration in init.h and make
them static.

Change-Id: I2b5429841bcd46376241890ace50b82a291b7400
Signed-off-by: Antonio Quartulli <antonio@mandelbit.com>
Acked-by: Frank Lichtenheld <frank@lichtenheld.com>
Gerrit URL: https://gerrit.openvpn.net/c/openvpn/+/1346
Message-Id: <20251104104448.98093-1-frank@lichtenheld.com>
URL: https://www.mail-archive.com/openvpn-devel@lists.sourceforge.net/msg34193.html
Signed-off-by: Gert Doering <gert@greenie.muc.de>