Reported a month ago by <email deleted>, putting on
a cloak of invisibility while blind and then using ';' or '/' to examine
yourself revealed that you had become invisible. This fix just changes
the lookat() output when you can't see that you can't see yourself. :-)
Probing and stethoscope still reveal invisibility, as will any message
which uses x_monnam() to identify the hero. (First part is intentional;
last part seems not worth bothering about--I'm not even sure that the
player can arrange to trigger it.)
bdb0930316