Commit b20ee7e26 introduced a bug where flatpak_load_deploy_data()
returns NULL without setting @error in the case that there's a problem
reading the deploy file. I think this is causing a seg fault in
flatpak_installation_list_installed_refs() which tries to print the
error message after calling get_ref() (which indirectly loads the deploy
file).
I didn't personally verify that this fixes the GNOME Builder seg fault
that was reported, but it seems almost certain looking at the provided
stack trace, since get_ref() only returns NULL if
flatpak_dir_get_deploy_data() returns NULL, and that function clearly
sets the error pointer on failure except in flatpak_load_deploy_data().
I'm not sure why the deploy file doesn't exist (or is unreadable) for
the user who reported this seg fault.
Fixes https://github.com/flatpak/flatpak/issues/2717Closes: #2733
Approved by: matthiasclasen
(cherry picked from commit 7a5c024695)
62d7c62779