Program crashes when USB joypad is disconnected about bizhawk HOT 3 CLOSED

Changed the title.  Bizhawk crashes when you unplug any USB controller.

I discovered this issue way back, but I couldn't identify a way to fix it.
It appears to be an issue with SlimDX.

The program hard-crashes. It doesn't throw an exception which can be caught or 
handled.  I attempted to 'check if the device was connected' before polling it, 
but it still blows up.

If there is an API that you need to call to handle this, I'm not sure what it 
is.

I guess some potential paths forward would be to 1) Check on SlimDX forums 2) 
Update to latest version of SlimDX, 3) Try to utilize a different library for 
controller input.

Fixed