Two fixes that both live in the JNI layer.
Folder memory cards on a user-chosen data folder crashed on the first
new save. FUSE-backed shared storage denies libc file CREATION even
though mkdir is already routed through Java, so SaveYAMLToFile opened a
not-yet-existing _pcsx2_index with an unchecked OpenCFile and then
dereferenced null. Existing saves reuse that file, which is exactly why
only new saves crashed. Null-check the write, and add a
CreateFileViaJava fallback in OpenCFile so a denied create is retried
through the Java file API - the same libc/Java asymmetry that
CreateDirectoryPath already relies on.
Patch and cheat enable-state was written to the base settings layer,
keyed only by patch name, so enabling e.g. "Widescreen 16:9" for one
game switched on the identically named patch in every other game.
LayeredSettingsInterface returns the first non-empty layer with the game
layer ahead of the base one, so upstream keys this per serial and CRC;
do the same, and strip the migrated names from the base list so an empty
per-game list cannot fall back through to it.
The per-game INI exporter also rebuilt the file from scratch, dropping
every key it does not own - the patch lists above, and per-game
MemoryCards and Gamefixes overrides. Load the existing file and clear
only the sections the exporter actually writes.
jpolo1224
07d03a5eac