NEWS: avoid crashing of preffil on empty file

27 jobs for <span class="ref-name">zimport</span> in 53 seconds (queued for 9 seconds)
Status Job ID Name Coverage
  Build
canceled #281340
docker linux amd64
archive

00:00:53

canceled #281341
docker linux amd64
build

00:00:53

canceled #281342
docker linux amd64
build-asan

00:00:53

canceled #281343
docker
kres-gen

00:00:53

 
  Test
canceled #281344
docker delayed
build:darwin

canceled #281345
docker linux amd64
deckard

canceled #281346
docker delayed
doc

canceled #281347
dind
docker

canceled #281348
docker delayed
lint:other

canceled #281349
docker linux amd64 delayed
lint:pedantic

canceled #281350
docker linux amd64
lint:scan-build

canceled #281351
docker linux amd64
lint:tidy

canceled #281352
privileged
pkg:epel-7

canceled #281353
privileged
pkg:fedora-29

canceled #281354
docker linux amd64
respdiff:basic

canceled #281355
docker linux amd64 delayed
test:valgrind

 
  Extended
canceled #281357
respdiff
fwd-tls6-kresd.udp6

canceled #281358
respdiff
fwd-udp6-kresd.udp6

canceled #281362
respdiff
fwd-udp6-unbound.tcp6

canceled #281363
respdiff
fwd-udp6-unbound.tls6

canceled #281361
respdiff
fwd-udp6-unbound.udp6

canceled #281360
respdiff
iter.tls6

canceled #281359
respdiff
iter.udp6

canceled #281356
docker linux amd64
pytests

canceled #281364
respdiff
resperf:fwd-tls6.udp-asan

canceled #281365
respdiff
resperf:fwd-udp6.udp-asan

canceled #281366
respdiff
resperf:iter.udp-asan