This adds a fall-through comment in i386-tdep.c. I was not sure what
to do here, so I elected to preserve the status quo. In review, John
Baldwin pointed out that: "I believe this is correct based on the diff
that added the special cases for xgetbv and xsetbv as previously ldgt
and lidt were treated the same".
gdb/ChangeLog
2018-05-04 Tom Tromey <tom@tromey.com>