From 784d4ca03d1c8916c94dd8528c54c60ce4b0967a Mon Sep 17 00:00:00 2001
From: Tom Hughes <tom@compton.nu>
Date: Wed, 24 Apr 2019 11:12:50 +0100
Subject: [PATCH] Avoid error when there is no layer with a keyid

Fixes #2215
---
 app/assets/javascripts/leaflet.map.js | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/app/assets/javascripts/leaflet.map.js b/app/assets/javascripts/leaflet.map.js
index 0cee211ce..1f161ceea 100644
--- a/app/assets/javascripts/leaflet.map.js
+++ b/app/assets/javascripts/leaflet.map.js
@@ -96,11 +96,11 @@ L.OSM.Map = L.Map.extend({
   },
 
   getMapBaseLayerId: function () {
-    var baseLayer;
+    var baseLayerId;
     this.eachLayer(function (layer) {
-      if (layer.options && layer.options.keyid) baseLayer = layer;
+      if (layer.options && layer.options.keyid) baseLayerId = layer.options.keyid;
     });
-    return baseLayer.options.keyid;
+    return baseLayerId;
   },
 
   getUrl: function (marker) {
-- 
2.43.2