Fix possible incorrect memory access.

1 files changed, 3 insertions, 0 deletions

diff --git a/src/map.h b/src/map.h
index 0f2f2bf47..db8b092de 100644
--- a/src/map.h
+++ b/src/map.h
@@ -498,6 +498,9 @@ class Map : public Properties, public ConfigListener
 
         void redrawMap();
 
+        bool empty()
+        { return mLayers.empty(); }
+
     protected:
         friend class Actor;
         friend class Minimap;