Merge branch '2.12'

lib/OpenLayers/Layer/Grid.js

@@ -1061,7 +1061,7 @@ OpenLayers.Layer.Grid = OpenLayers.Class(OpenLayers.Layer.HTTPRequest, {
             this.numLoadingTiles--;
             this.events.triggerEvent("tileloaded", {tile: tile});
             //if that was the last tile, then trigger a 'loadend' on the layer
-            if (this.tileQueue.length === 0 && this.numLoadingTiles === 0) {
+            if (this.numLoadingTiles === 0) {
                 this.events.triggerEvent("loadend");
                 if(this.backBuffer) {
                     // the removal of the back buffer is delayed to prevent flash

lib/OpenLayers/Map.js

@@ -1797,7 +1797,7 @@ OpenLayers.Map = OpenLayers.Class({
      * options - {Object}
      */
     moveTo: function(lonlat, zoom, options) {
-        if (!(lonlat instanceof OpenLayers.LonLat)) {
+        if (lonlat != null && !(lonlat instanceof OpenLayers.LonLat)) {
             lonlat = new OpenLayers.LonLat(lonlat);
         }
         if (!options) {