printers: Use g_autoptr with strings

11 jobs for printers-g-autofree-strings in 3 minutes and 51 seconds (queued for 1 second)
Status Job ID Name Coverage
  Build
passed #205410
build

00:02:25

 
  Test
passed #205412
asan

00:01:24

passed #205411
test

00:00:50

 
  Manual
manual #205417
allowed to fail manual
armv8
manual #205413
allowed to fail manual
flatpak
manual #205416
allowed to fail manual
msan
manual #205418
allowed to fail manual
ppc64le
manual #205414
allowed to fail manual
tsan
manual #205415
allowed to fail manual
ubsan
 
  Review
manual #205419
allowed to fail manual
review
manual #205420
allowed to fail manual
stop_review