Merge pull request #28359 from keszybz/ret-gather

Add RET_GATHER macro to make continue-but-remember-first-error functions easier

diff --cc src/fstab-generator/fstab-generator.c
Simple merge

diff --cc src/gpt-auto-generator/gpt-auto-generator.c
Simple merge

diff --cc src/network/networkd-address.c
Simple merge

diff --cc src/network/networkd-route.c
Simple merge

diff --cc src/network/networkd-routing-policy-rule.c
Simple merge

diff --cc src/sysusers/sysusers.c
Simple merge