MSVC complained that they might be used uninitialized. In some cases,
this might have been possible.
XRogue already has initializations for all these variables.
new_level() redraws the whole screen, including the message line, so if
msg() has just been called, the message will likely not last long
enough to be noticed. These cases have been changed so that msg() is
called after new_level().
If a fall through a trapdoor is fatal, "You fall into a trap!" is no
longer printed, but the tombstone should make things clear.