libarchive: backport zip directory recognition fix
Backport upstream libarchive commit 2ecf8d1c1e
(Try harder to detect directories in zip archives, 2016-12-23).
Fixes: #16741 (closed)
Backport upstream libarchive commit 2ecf8d1c1e
(Try harder to detect directories in zip archives, 2016-12-23).
Fixes: #16741 (closed)