common/dir: Fix a couple of leaks of GKeyFile config objects

ostree_repo_copy_config() returns (transfer full).

Signed-off-by: Philip Withnall <withnall@endlessm.com>

Closes: #1831
Approved by: mwleeds
This commit is contained in:
Internal Server Error - Gitea: Git with a cup of tea
500 Internal Server Error

Gitea Version: 1.28.0+dev-477-g8b6ad49a5f