Fix ghost spawners

Niveaux/level 21.txt

@@ -1,7 +1,7 @@
 Castle
 21
 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 
-1 3 0 0 1 1 1 1 1 1 0 0 0 0 0 0 2 1 1 1 
+1 3 0 0 1 1 1 1 1 1 0 0 0 0 0 0 -2 1 1 1 
 1 1 1 0 0 0 0 0 0 0 0 1 1 1 1 0 1 1 1 1 
 1 1 1 1 1 1 0 1 1 1 0 1 1 1 1 0 1 1 1 1 
 1 1 1 1 1 1 0 1 1 1 0 1 1 1 1 0 1 1 1 1 
@@ -19,4 +19,4 @@ Castle
 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 1 1 0 1 1 
 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 1 1 0 1 1 
 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 
-1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 
+1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 

Niveaux/level 3.txt

@@ -1,7 +1,7 @@
 Hole level
 3
 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 
-1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 
+1 -1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 
 1 0 1 1 1 1 1 1 1 1 1 0 1 1 1 0 1 3 0 1 
 1 0 1 1 1 0 0 0 1 1 1 0 1 1 1 0 1 1 0 1 
 1 0 0 0 0 0 1 0 0 0 0 0 1 1 1 0 1 1 0 1