5.1.1 immediate context ref count

[gareththomasamd]

AGS keeps hold of a reference to the immediate context until after agsDriverExtensionsDX11_DestroyDevice is called.

A possible workaround is to bump the ref count on the device, call agsDriverExtensionsDX11_DestroyDevice, then manually release both the immediate context and the device.

This will be fixed for the next AGS release.

[gareththomasamd]

now in 5.2