== DETAILS
I believe this should (at least partially) resolve#6025.
In my own testing, I haven't been able to reproduce the DSI error,
but I have encountered the black-screen crashes and could reliably
(but not predictably) reproduce the crash by simply switching
between cores.
Looking at the DSI error, the crash occurs within iosuhax. So, I looked
at that code.. and basically none of the input pointers are validated.
Yikes.
This commit adds pointer sanity checking to all of the iosuhax code.
== TESTING
When I did a test build, I noticed two things:
1. No more black screen crashes!
2. In lieu of the crash, it looks like the network logging dies. RA itself
seems to continue working just fine.
