mmsd: Fix a crash when no image attachments are present

8 jobs for wip/sadiq/fix-mms-no-image-crash in 11 minutes and 38 seconds (queued for 1 second)
Status Name Job ID Coverage
  Build
passed build-pureos-gcc-byzantium #376642
librem5

00:02:10

passed build-pureos-gcc-byzantium-no-purple #376641
librem5

00:03:05

 
  Test
passed check-po #376644
librem5

00:00:16

passed test:debian-gcc #376643
librem5

00:03:33

19.4%
 
  Package
passed package-pureos-byzantium #376645
librem5

00:01:58

passed package-pureos-byzantium:arm64 #376646
librem5:arm64

00:04:59

 
  Test Package
passed autopkgtest-pureos-byzantium-package #376647
librem5

00:01:22

passed lintian-pureos-byzantium-package #376648
librem5

00:00:38