printers: Use g_autoptr for GError handling

11 jobs for printers-g-auto-gerror in 4 minutes and 44 seconds (queued for 4 seconds)
Status Job ID Name Coverage
  Build
passed #105594
build

00:02:08

 
  Test
passed #105596
asan

00:01:56

passed #105595
test

00:00:39

 
  Manual
manual #105601
allowed to fail manual
armv8
manual #105597
allowed to fail manual
flatpak
manual #105600
allowed to fail manual
msan
manual #105602
allowed to fail manual
ppc64le
manual #105598
allowed to fail manual
tsan
manual #105599
allowed to fail manual
ubsan
 
  Review
manual #105603
allowed to fail manual
review
manual #105604
allowed to fail manual
stop_review