core: free lines after reading them
Closes https://github.com/systemd/systemd/issues/11251.
(cherry picked from commit
7334ade4a7e103b1a01d1c8fe1ea7c7a854a1c31)
(cherry picked from commit
5fa79ab2eb900fc58824060e3dcf9508276c9047)
Gbp-Pq: Name core-free-lines-after-reading-them.patch
Do not start server if it is already runnning (#11245)
(cherry picked from commit
7da7340afdd4760fb2dd9d000105c324a77aff4b)
Gbp-Pq: Name Do-not-start-server-if-it-is-already-runnning-11245.patch