Bugfix: Remove direct assignment inside if statement

spatial/static/spatial/js/gridmap.js

@@ -29,7 +29,7 @@ async function switchLayer(dayIndex)
         if(layers[i].getVisible())
         {
             // See if there is a language specific legend available
-            if(document.getElementById("layerLegend").innerHTML=currentLayer.Abstract != undefined)
+            if(currentLayer.Abstract != undefined)
             {
                 document.getElementById("layerLegend").innerHTML=currentLayer.Abstract;
             }