Compiling with GCC 4.6.0 20100925 produced warnings:
/src/qemu/target-i386/op_helper.c: In function 'switch_tss':
/src/qemu/target-i386/op_helper.c:283:53: error: variable 'new_trap' set but not used [-Werror=unused-but-set-variable]
Fix by adding a dummy cast so that the variable is not unused. Add also
pointer to docs.
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>