It's an error to call g_set_error() on an error that's already set, and
flatpak_dir_get_deploy_data() already sets FLATPAK_ERROR_NOT_INSTALLED
for us when necessary, so just pass on any errors to the caller of
flatpak_dir_get_origin(). In the case that the error is something else,
that should be treated as an error, because we never expect the deploy
directory to exist but not have a deploy file (see the implementations
of flatpak_dir_deploy() and flatpak_dir_undeploy()).
Closes: #3032
Approved by: alexlarsson
(cherry picked from commit b44c1a5799)
(cherry picked from commit 8ed03ef61e)
Closes: #3115
Approved by: alexlarsson
11070054b4