set centerzoom before drawing map

js/id/renderer/map.js

@@ -1,5 +1,5 @@
 iD.Map = function(context) {
-    var dimensions = [],
+    var dimensions = [1, 1],
         dispatch = d3.dispatch('move', 'drawn'),
         projection = d3.geo.mercator().scale(1024),
         roundedProjection = iD.svg.RoundProjection(projection),
@@ -148,6 +148,9 @@ iD.Map = function(context) {
     }
 
     function redraw(difference) {
+
+        if (!surface) return;
+
         clearTimeout(timeoutId);
 
         // If we are in the middle of a zoom/pan, we can't do differenced redraws.

js/id/ui.js

@@ -17,6 +17,14 @@ iD.ui = function(context) {
 
         if (iD.detect().opera) container.classed('opera', true);
 
+        var hash = iD.behavior.Hash(context);
+
+        hash();
+
+        if (!hash.hadHash) {
+            map.centerZoom([-77.02271, 38.90085], 20);
+        }
+
         var m = container.append('div')
             .attr('id', 'map')
             .call(map);
@@ -123,14 +131,6 @@ iD.ui = function(context) {
         d3.select(document)
             .call(keybinding);
 
-        var hash = iD.behavior.Hash(context);
-
-        hash();
-
-        if (!hash.hadHash) {
-            map.centerZoom([-77.02271, 38.90085], 20);
-        }
-
         context.enter(iD.modes.Browse(context));
 
         context.container()