v3.3.3: fixed NPE caused by resurrection level reset + skeleton key

core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/items/artifacts/SkeletonKey.java

@@ -595,6 +595,13 @@ public class SkeletonKey extends Artifact {
 			}
 		}
 
+		//used if a level was reset, e.g. via unblessed ankh vs. boss
+		public void clearDepth(){
+			ironKeysNeeded[Dungeon.depth] = -1;
+			goldenKeysNeeded[Dungeon.depth] = -1;
+			crystalKeysNeeded[Dungeon.depth] = -1;
+		}
+
 		public void processIronLockOpened(){
 			if (ironKeysNeeded[Dungeon.depth] == -1){
 				setupKeysForDepth();

core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/scenes/InterlevelScene.java

@@ -769,7 +769,7 @@ public class InterlevelScene extends PixelScene {
 
 			//need to reset key replacement tracking as well
 			if (Dungeon.hero.buff(SkeletonKey.KeyReplacementTracker.class) != null){
-				Dungeon.hero.buff(SkeletonKey.KeyReplacementTracker.class).setupKeysForDepth();
+				Dungeon.hero.buff(SkeletonKey.KeyReplacementTracker.class).clearDepth();
 			}
 
 		} else {