vfs_real: forget a path when its file is gone

The path cache holds weak references, but nothing erased an entry once
its file was destroyed, so every path ever opened stayed in the cache
until the filesystem was destroyed (title 1's loose RomFS: 206k paths,
24 MB of keys, kept after the game stops). The entry is erased when the
file's last reference is dropped, unless the path was opened again
meanwhile.

0 files changed, 0 insertions, 0 deletions