v0.9.4: fixed spawned wraiths not opening doors

core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Wraith.java

@@ -106,6 +106,7 @@ public class Wraith extends Mob {
 			w.adjustStats( Dungeon.depth );
 			w.pos = pos;
 			w.state = w.HUNTING;
+			Dungeon.level.occupyCell(w);
 			GameScene.add( w, SPAWN_DELAY );
 			
 			w.sprite.alpha( 0 );