Merge branch 'spam-crash' into 'master'

chatty-conversation: Don't crash on conversation with not yet buddies

Closes #82

See merge request !36
3 jobs from master in 5 minutes and 11 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Build
passed #9248
librem5
build-debian-gcc

00:01:53

 
  Test
passed #9249
librem5
test:debian-gcc

00:01:35

 
  Package
passed #9250
librem5
build-debian-package

00:01:43