Fix If

BauSystem_Main/src/de/steamwar/bausystem/features/script/command/If.java

@@ -68,9 +68,7 @@ public class If implements SpecialCommand {
     }
 
     private void setIndex(ScriptExecutor scriptExecutor, String name) {
-        int jp = scriptExecutor.jumpPoints.getOrDefault(name, -1);
-        if (jp != -1) {
-            scriptExecutor.setIndex(jp);
-        }
+        Integer jp = scriptExecutor.jumpPoints.getOrDefault(name, null);
+        if (jp != null) scriptExecutor.setIndex(jp);
     }
 }