recovering from a possible race condition in sii_intr, read the active
target from the destat register, and set the softc state pointer
`state' appropriately. (This warning is in a block that prints a
warning message, and the warning message has _never_ been seen. The
bug is probably innocuous.)
Also addresses the `more thought needed' in the log message for rev. 1.12.
3906c8cde5