fix -q doesn't work when use with 'unbound-control stats_shm'
fix -q doesn't work when use with 'unbound-control stats_shm'

Signed-off-by: eaglegai <f39f3ac5c81d612e8dee384b7d4f8c5888dcf1de@163.com>

NLnetLabs/unbound,NLnetLabs/unbound,NLnetLabs/unbound,NLnetLabs/unbound