Similar to commit a7a81b6fbe (tdf#164359
editeng RTF export: track unused parent styles recursively, 2024-12-18),
the follows of a style has to be tracked recursively as well, to avoid a
crash.
The Impress UI doesn't seem to have a way to specify the parent/next
name of a style, but you can definitely create such a follow chain from
test code and probably this is also possible via macros.
Fix this similar to the parent case, except here handle when a style
sets itself as a follow: that's what the default Outline N styles do in
Impress.
Change-Id: If3847add02061fdb9ba1e3fbf7c1fc42e3866209
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/178786
Tested-by: Jenkins
Reviewed-by: Miklos Vajna <vmiklos@collabora.com>
Miklos Vajna
65043a50ad