This is a fallout from the change in commit be1f7435ef218b1d ("kern:
start tracking cr_gid outside of cr_groups[]").
It doesn't seem that the content of 'reused_creds' has any practical
effect (it is copied into 'fdi.finh', which is not used to queue nor
send a a message to the deamon), in which case this change boils down to
some code simplification.
Fixes: be1f7435ef218b1d ("kern: start tracking cr_gid outside of cr_groups[]")
Sponsored by: The FreeBSD Foundation