From b0f155a377b887d29b7c2deb0f1916b584ec4f0e Mon Sep 17 00:00:00 2001
From: Emux <devemux86@gmail.com>
Date: Sun, 9 Dec 2018 15:02:49 +0200
Subject: [PATCH] MapScaleBarLayer: check if scale bar is destroyed, fix #611

---
 vtm/src/org/oscim/scalebar/MapScaleBarLayer.java | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/vtm/src/org/oscim/scalebar/MapScaleBarLayer.java b/vtm/src/org/oscim/scalebar/MapScaleBarLayer.java
index 2a533688..a4235794 100644
--- a/vtm/src/org/oscim/scalebar/MapScaleBarLayer.java
+++ b/vtm/src/org/oscim/scalebar/MapScaleBarLayer.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2016 devemux86
+ * Copyright 2016-2018 devemux86
  *
  * This program is free software: you can redistribute it and/or modify it under the
  * terms of the GNU Lesser General Public License as published by the Free Software
@@ -42,6 +42,9 @@ public class MapScaleBarLayer extends Layer implements Map.UpdateListener {
         if (e == Map.UPDATE_EVENT)
             return;
 
+        if (mapScaleBar.mapScaleBitmap == null)
+            return;
+
         if (!mapScaleBar.isVisible())
             return;