c3nav.js no exception if there is no grid
@@ -1555,7 +1555,7 @@ L.SquareGridLayer = L.Layer.extend({
},
_updateGrid: function(map) {
- if (!this.cols.length) return;
+ if (!this.cols || this.cols.length) return;
var mapSize = map.getSize(),
sidebarStart = $('#sidebar').outerWidth() + 15,
searchHeight = $('#search').outerHeight() + 10,
