Handle leak on Windows

[hrydgard]

Looking at PPSSPP in Process Explorer, there's a strange issue where handles to games appears as open files unexpectedly. It repros the easiest by just rightclicking on a game in the menu.

Really not sure where these are coming from, but they have the annoying side effect that you can't fully delete a homebrew game that you just played, and it's never good to leak handles so this needs to be fixed.

Possibly Windows-specific.

[hrydgard]

Seems we're somehow leaking LocalFileLoader objects. It feels like it has something to do with CleanRecent but not sure. Either way it's kind of awkward that CleanRecent will try to do ConstructFileLoader on directories of homebrew, which tries to open them as files, which does work (since CreateFile failes, and then a directory check works) but it's odd.

[unknownbrackets]

This might be what #11698 was getting at.

-[Unknown]

[hrydgard]

Huh, indeed. Anyway, caught it.