bug#55450: bitlbee running as root

[Ludovic Courtès]

Starting from commit 211fe3f66e6dfdaa64974931c458ab1d92afc182, if PID 1
is Shepherd 0.9.0, the bitlbee daemon was started on-demand as an inetd
service.

However, due to a logic bug, it was running as root (in a separate user
namespace though) instead of running as “bitlbee”.  The bug is that we
were spawning “bitlbee -u bitlbee” as root; normally, bitlbee would
setuid to the “bitlbee” user early on, but since it was in a separate
namespace and with a minimal /etc/passwd, it couldn’t do anything and
kept the current UID (that UID was 1000 inside the user namespace, but 0
outside).

Fix coming soon…

Ludo’.