Comment 2 for bug 1820068

I can say that this was also not introduced by these latest commits:

5704fba8d935e8ea31c769e88f4a5ddfa9696a99 library: fix segfault in overlaydirat_for_each
9374f419a0169e1e739a1aac567967841343d85d tests: Add option to dump policy cache dir with the libapparmor wrapper
68eb3be2ae8777527159ce63ea399b3e108475ae tests: Teach aa_policy_cache.sh about the cache location and subdirs
01aec04bd6457441771cda028418564606c3a653 libapparmor: Fix segfault when loading policy cache files
b502110dcf629a79960ec90e15d1d50772cd91d8 libapparmor: Fix variable name overlap in merge() macro