roothints: fix segfault with hints.root_file, added test

7 jobs for roothints-tests in 2 minutes and 59 seconds (queued for 3 seconds)
Status Job ID Name Coverage
  Build
passed #61075
docker linux amd64
build:linux:amd64

00:00:43

 
  Test
passed #61081
docker linux amd64
deckard:linux:amd64

00:00:38

passed #61078
docker linux amd64
deckard:linux:amd64:valgrind

00:01:22

passed #61080
docker linux amd64
respdiff:linux:amd64

00:02:06

passed #61076
docker linux amd64
test:linux:amd64

00:00:29

passed #61079
docker linux amd64
test:linux:amd64:valgrind

00:00:53

failed #61077
docker linux amd64
deckard:linux:amd64

00:00:32