enabling Halloween in infinite geometries now produces something that makes sense

landgen.cpp

@@ -1308,6 +1308,12 @@ EX void giantLandSwitch(cell *c, int d, cell *from) {
       break;
     
     case laHalloween:
+      if(!closed_or_bounded) {
+        ONEMPTY {
+          if(hrand(1000) < PT(20, 20)) c->item = itTreat;
+          if(hrand(1000) < 20) c->wall = waChasm;
+          }
+        }
       break;
     
     case laWildWest:

landlock.cpp

@@ -562,6 +562,8 @@ EX eLand getNewLand(eLand old) {
     tab[cnt++] = laDocks;
     }
 
+  tab[cnt++] = laHalloween;
+
   // the advanced lands
   if(all_unlocked || gold() >= R60) {
     tab[cnt++] = laCrossroads;