zeromonst

Make 'zeromonst' global instead of local to makemon.c.  Its address
isn't used as a special value like &zeroobj, but it is useful to
have available for initializing various pseudo-monsters.

modified:
  include/decl.h
  src/decl.c, makemon.c, mkobj.c, mplayer.c, teleport.c

src/teleport.c

@@ -128,7 +128,9 @@ unsigned entflags;
         /* default to player's original monster type */
         mdat = &mons[u.umonster];
     }
-    fakemon.data = mdat; /* set up for goodpos */
+    fakemon = zeromonst;
+    set_mon_data(&fakemon, mdat, -1); /* set up for goodpos */
+
     good_ptr = good;
     range = 1;
     /*